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28629260 = 22511179727
BaseRepresentation
bin110110100110…
…1100100001100
31222212111221222
41231031210030
524312114020
62501342512
7465226142
oct155154414
958774858
1028629260
1115184650
129707a38
135c150ba
143b33592
1527a7b25
hex1b4d90c

28629260 has 48 divisors (see below), whose sum is σ = 66044160. Its totient is φ = 10338240.

The previous prime is 28629217. The next prime is 28629277. The reversal of 28629260 is 6292682.

It is a self number, because there is not a number n which added to its sum of digits gives 28629260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39017 + ... + 39743.

It is an arithmetic number, because the mean of its divisors is an integer number (1375920).

Almost surely, 228629260 is an apocalyptic number.

28629260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28629260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33022080).

28629260 is an abundant number, since it is smaller than the sum of its proper divisors (37414900).

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

28629260 is a wasteful number, since it uses less digits than its factorization.

28629260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926 (or 924 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 28629260 is about 5350.6317384025. The cubic root of 28629260 is about 305.9168327387.

The spelling of 28629260 in words is "twenty-eight million, six hundred twenty-nine thousand, two hundred sixty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 179 220 358 716 727 895 1454 1790 1969 2908 3580 3635 3938 7270 7876 7997 9845 14540 15994 19690 31988 39380 39985 79970 130133 159940 260266 520532 650665 1301330 1431463 2602660 2862926 5725852 7157315 14314630 28629260