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28926072 = 233472911
BaseRepresentation
bin110111001011…
…0000001111000
32000102121010000
41232112001320
524401113242
62511553000
7500603400
oct156260170
960377100
1028926072
111536764a
12982b760
135cba226
143bad800
152815a4c
hex1b96078

28926072 has 120 divisors (see below), whose sum is σ = 94350960. Its totient is φ = 8255520.

The previous prime is 28926067. The next prime is 28926077. The reversal of 28926072 is 27062982.

It is an interprime number because it is at equal distance from previous prime (28926067) and next prime (28926077).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28926077) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 31297 + ... + 32207.

It is an arithmetic number, because the mean of its divisors is an integer number (786258).

Almost surely, 228926072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28926072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47175480).

28926072 is an abundant number, since it is smaller than the sum of its proper divisors (65424888).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28926072 is a wasteful number, since it uses less digits than its factorization.

28926072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 943 (or 923 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 28926072 is about 5378.2963845441. The cubic root of 28926072 is about 306.9703911716.

The spelling of 28926072 in words is "twenty-eight million, nine hundred twenty-six thousand, seventy-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 49 54 56 63 72 81 84 98 108 126 147 162 168 189 196 216 252 294 324 378 392 441 504 567 588 648 756 882 911 1134 1176 1323 1512 1764 1822 2268 2646 2733 3528 3644 3969 4536 5292 5466 6377 7288 7938 8199 10584 10932 12754 15876 16398 19131 21864 24597 25508 31752 32796 38262 44639 49194 51016 57393 65592 73791 76524 89278 98388 114786 133917 147582 153048 172179 178556 196776 229572 267834 295164 344358 357112 401751 459144 516537 535668 590328 688716 803502 1033074 1071336 1205253 1377432 1607004 2066148 2410506 3214008 3615759 4132296 4821012 7231518 9642024 14463036 28926072