856452428 has 12 divisors (see below), whose sum is σ = 1614083520. Its totient is φ = 395285712.

The previous prime is 856452413. The next prime is 856452433. The reversal of 856452428 is 824254658.

It is a super-2 number, since 2×856452428² = 1467021522854190368, which contains 22 as substring.

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, 8235068 + ... + 8235171.

It is an arithmetic number, because the mean of its divisors is an integer number (134506960).

Almost surely, 2^856452428 is an apocalyptic number.

It is an amenable number.

856452428 is a deficient number, since it is larger than the sum of its proper divisors (757631092).

856452428 is a wasteful number, since it uses less digits than its factorization.

856452428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16470256 (or 16470254 counting only the distinct ones).

The product of its digits is 614400, while the sum is 44.

The square root of 856452428 is about 29265.2084906293. The cubic root of 856452428 is about 949.6591308931.

The spelling of 856452428 in words is "eight hundred fifty-six million, four hundred fifty-two thousand, four hundred twenty-eight".