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30868712 = 2371573511
BaseRepresentation
bin111010111000…
…0010011101000
32011002021220122
41311300103220
530400244322
63021342412
7523244150
oct165602350
964067818
1030868712
1116474136
12a407a08
13651a514
144157760
152a9b442
hex1d704e8

30868712 has 32 divisors (see below), whose sum is σ = 66587520. Its totient is φ = 13141440.

The previous prime is 30868699. The next prime is 30868723. The reversal of 30868712 is 21786803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7037 + ... + 10547.

It is an arithmetic number, because the mean of its divisors is an integer number (2080860).

Almost surely, 230868712 is an apocalyptic number.

It is an amenable number.

30868712 is an abundant number, since it is smaller than the sum of its proper divisors (35718808).

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

30868712 is a wasteful number, since it uses less digits than its factorization.

30868712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3681 (or 3677 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 30868712 is about 5555.9618429215. The cubic root of 30868712 is about 313.6939693493.

The spelling of 30868712 in words is "thirty million, eight hundred sixty-eight thousand, seven hundred twelve".

Divisors: 1 2 4 7 8 14 28 56 157 314 628 1099 1256 2198 3511 4396 7022 8792 14044 24577 28088 49154 98308 196616 551227 1102454 2204908 3858589 4409816 7717178 15434356 30868712