34128730 has 16 divisors (see below), whose sum is σ = 61498440. Its totient is φ = 13636672.

The previous prime is 34128719. The next prime is 34128749. The reversal of 34128730 is 3782143.

It can be written as a sum of positive squares in 4 ways, for example, as 11689561 + 22439169 = 3419^2 + 4737^2 .

It is a super-2 number, since 2×34128730² = 2329540422825800, which contains 22 as substring.

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, 16092 + ... + 18088.

Almost surely, 2^34128730 is an apocalyptic number.

34128730 is a deficient number, since it is larger than the sum of its proper divisors (27369710).

34128730 is a wasteful number, since it uses less digits than its factorization.

34128730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3713.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 34128730 is about 5841.9799725778. The cubic root of 34128730 is about 324.3695232733.

The spelling of 34128730 in words is "thirty-four million, one hundred twenty-eight thousand, seven hundred thirty".