3680428 has 6 divisors (see below), whose sum is σ = 6440756. Its totient is φ = 1840212.

The previous prime is 3680407. The next prime is 3680431. The reversal of 3680428 is 8240863.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3680428.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 460050 + ... + 460057.

Almost surely, 2^3680428 is an apocalyptic number.

It is an amenable number.

3680428 is a deficient number, since it is larger than the sum of its proper divisors (2760328).

3680428 is a wasteful number, since it uses less digits than its factorization.

3680428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 920111 (or 920109 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 3680428 is about 1918.4441612932. Note that the first 3 decimals coincide. The cubic root of 3680428 is about 154.3948377201.

The spelling of 3680428 in words is "three million, six hundred eighty thousand, four hundred twenty-eight".