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28954068 = 223111347359
BaseRepresentation
bin110111001110…
…0110111010100
32000111000111220
41232130313110
524403012233
62512330340
7501051123
oct156346724
960430456
1028954068
1115386690
1298439b0
135cc9bb0
143bb9aba
15281deb3
hex1b9cdd4

28954068 has 96 divisors (see below), whose sum is σ = 81285120. Its totient is φ = 7904640.

The previous prime is 28954067. The next prime is 28954069. The reversal of 28954068 is 86045982.

It is an interprime number because it is at equal distance from previous prime (28954067) and next prime (28954069).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28954061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80473 + ... + 80831.

It is an arithmetic number, because the mean of its divisors is an integer number (846720).

Almost surely, 228954068 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 28954068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40642560).

28954068 is an abundant number, since it is smaller than the sum of its proper divisors (52331052).

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

28954068 is a wasteful number, since it uses less digits than its factorization.

28954068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 435 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 28954068 is about 5380.8984379934. The cubic root of 28954068 is about 307.0693926540.

The spelling of 28954068 in words is "twenty-eight million, nine hundred fifty-four thousand, sixty-eight".

Divisors: 1 2 3 4 6 11 12 13 22 26 33 39 44 47 52 66 78 94 132 141 143 156 188 282 286 359 429 517 564 572 611 718 858 1034 1077 1222 1436 1551 1716 1833 2068 2154 2444 3102 3666 3949 4308 4667 6204 6721 7332 7898 9334 11847 13442 14001 15796 16873 18668 20163 23694 26884 28002 33746 40326 47388 50619 51337 56004 67492 80652 101238 102674 154011 185603 202476 205348 219349 308022 371206 438698 556809 616044 658047 742412 877396 1113618 1316094 2227236 2412839 2632188 4825678 7238517 9651356 14477034 28954068