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68772752 = 24172107139
BaseRepresentation
bin1000001100101…
…10001110010000
311210102000110222
410012112032100
5120101212002
610454012212
71463362436
oct406261620
9153360428
1068772752
1135902a94
121b047068
131132c049
1491c2d56
1560871a2
hex4196390

68772752 has 60 divisors (see below), whose sum is σ = 143897040. Its totient is φ = 31830528.

The previous prime is 68772749. The next prime is 68772763. The reversal of 68772752 is 25727786.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 494699 + ... + 494837.

It is an arithmetic number, because the mean of its divisors is an integer number (2398284).

Almost surely, 268772752 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 68772752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71948520).

68772752 is an abundant number, since it is smaller than the sum of its proper divisors (75124288).

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

68772752 is a wasteful number, since it uses less digits than its factorization.

68772752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 265 counting only the distinct ones).

The product of its digits is 329280, while the sum is 44.

The square root of 68772752 is about 8292.9338596181. The cubic root of 68772752 is about 409.7058210981.

The spelling of 68772752 in words is "sixty-eight million, seven hundred seventy-two thousand, seven hundred fifty-two".

Divisors: 1 2 4 8 16 17 34 68 107 136 139 214 272 278 289 428 556 578 856 1112 1156 1712 1819 2224 2312 2363 3638 4624 4726 7276 9452 14552 14873 18904 29104 29746 30923 37808 40171 59492 61846 80342 118984 123692 160684 237968 247384 252841 321368 494768 505682 642736 1011364 2022728 4045456 4298297 8596594 17193188 34386376 68772752