7656428 has 24 divisors (see below), whose sum is σ = 14568288. Its totient is φ = 3499776.

The previous prime is 7656413. The next prime is 7656431. The reversal of 7656428 is 8246567.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 7656391 and 7656400.

It is a congruent number.

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, 5225 + ... + 6527.

It is an arithmetic number, because the mean of its divisors is an integer number (607012).

Almost surely, 2^7656428 is an apocalyptic number.

It is an amenable number.

7656428 is a deficient number, since it is larger than the sum of its proper divisors (6911860).

7656428 is a wasteful number, since it uses less digits than its factorization.

7656428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1433 (or 1431 counting only the distinct ones).

The product of its digits is 80640, while the sum is 38.

The square root of 7656428 is about 2767.0251173417. The cubic root of 7656428 is about 197.0949064724.

It can be divided in two parts, 7 and 656428, that multiplied together give a triangular number (4594996 = T₃₀₃₁).

The spelling of 7656428 in words is "seven million, six hundred fifty-six thousand, four hundred twenty-eight".