3942628 has 6 divisors (see below), whose sum is σ = 6899606. Its totient is φ = 1971312.

The previous prime is 3942619. The next prime is 3942643. The reversal of 3942628 is 8262493.

It can be written as a sum of positive squares in only one way, i.e., 3504384 + 438244 = 1872^2 + 662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3942593 and 3942602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492825 + ... + 492832.

Almost surely, 2^3942628 is an apocalyptic number.

It is an amenable number.

3942628 is a deficient number, since it is larger than the sum of its proper divisors (2956978).

3942628 is a wasteful number, since it uses less digits than its factorization.

3942628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985661 (or 985659 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 3942628 is about 1985.6051974146. The cubic root of 3942628 is about 157.9775110864.

The spelling of 3942628 in words is "three million, nine hundred forty-two thousand, six hundred twenty-eight".