85428656 has 20 divisors (see below), whose sum is σ = 166364352. Its totient is φ = 42495936.

The previous prime is 85428649. The next prime is 85428661. The reversal of 85428656 is 65682458.

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, 10400 + ... + 16703.

Almost surely, 2^85428656 is an apocalyptic number.

It is an amenable number.

85428656 is a deficient number, since it is larger than the sum of its proper divisors (80935696).

85428656 is a wasteful number, since it uses less digits than its factorization.

85428656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27308 (or 27302 counting only the distinct ones).

The product of its digits is 460800, while the sum is 44.

The square root of 85428656 is about 9242.7623576504. The cubic root of 85428656 is about 440.4208370324.

The spelling of 85428656 in words is "eighty-five million, four hundred twenty-eight thousand, six hundred fifty-six".