34745728 has 16 divisors (see below), whose sum is σ = 69220260. Its totient is φ = 17372800.

The previous prime is 34745713. The next prime is 34745729. The reversal of 34745728 is 82754743.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-2 number, since 2×34745728² = 2414531228499968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34745729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135598 + ... + 135853.

Almost surely, 2^34745728 is an apocalyptic number.

It is an amenable number.

34745728 is a deficient number, since it is larger than the sum of its proper divisors (34474532).

34745728 is an equidigital number, since it uses as much as digits as its factorization.

34745728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271465 (or 271453 counting only the distinct ones).

The product of its digits is 188160, while the sum is 40.

The square root of 34745728 is about 5894.5507038281. The cubic root of 34745728 is about 326.3125710985.

The spelling of 34745728 in words is "thirty-four million, seven hundred forty-five thousand, seven hundred twenty-eight".