34728972 has 24 divisors (see below), whose sum is σ = 81134592. Its totient is φ = 11562000.

The previous prime is 34728971. The next prime is 34728973. The reversal of 34728972 is 27982743.

It is an interprime number because it is at equal distance from previous prime (34728971) and next prime (34728973).

It is a super-2 number, since 2×34728972² = 2412202992353568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (34728971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13597 + ... + 15947.

It is an arithmetic number, because the mean of its divisors is an integer number (3380608).

Almost surely, 2^34728972 is an apocalyptic number.

It is an amenable number.

34728972 is an abundant number, since it is smaller than the sum of its proper divisors (46405620).

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

34728972 is a wasteful number, since it uses less digits than its factorization.

34728972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3589 (or 3587 counting only the distinct ones).

The product of its digits is 169344, while the sum is 42.

The square root of 34728972 is about 5893.1292196930. The cubic root of 34728972 is about 326.2601083170.

It can be divided in two parts, 347289 and 72, that added together give a triangular number (347361 = T₈₃₃).

The spelling of 34728972 in words is "thirty-four million, seven hundred twenty-eight thousand, nine hundred seventy-two".