3407728 has 20 divisors (see below), whose sum is σ = 6631768. Its totient is φ = 1696320.

The previous prime is 3407693. The next prime is 3407743. The reversal of 3407728 is 8277043.

It is a super-2 number, since 2×3407728² = 23225220243968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3407728.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5683 + ... + 6253.

Almost surely, 2^3407728 is an apocalyptic number.

It is an amenable number.

3407728 is a deficient number, since it is larger than the sum of its proper divisors (3224040).

3407728 is a wasteful number, since it uses less digits than its factorization.

3407728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952 (or 946 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 3407728 is about 1846.0032502680. The cubic root of 3407728 is about 150.4833003917.

The spelling of 3407728 in words is "three million, four hundred seven thousand, seven hundred twenty-eight".