3870628 has 12 divisors (see below), whose sum is σ = 7172172. Its totient is φ = 1821440.

The previous prime is 3870619. The next prime is 3870631. The reversal of 3870628 is 8260783.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3305124 + 565504 = 1818^2 + 752^2 .

It is a super-2 number, since 2×3870628² = 29963522228768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 3870593 and 3870602.

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, 28393 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (597681).

Almost surely, 2^3870628 is an apocalyptic number.

It is an amenable number.

3870628 is a deficient number, since it is larger than the sum of its proper divisors (3301544).

3870628 is a wasteful number, since it uses less digits than its factorization.

3870628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56942 (or 56940 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 3870628 is about 1967.3911659861. The cubic root of 3870628 is about 157.0099389221.

The spelling of 3870628 in words is "three million, eight hundred seventy thousand, six hundred twenty-eight".