30853656 has 32 divisors (see below), whose sum is σ = 85705200. Its totient is φ = 10284480.

The previous prime is 30853643. The next prime is 30853681. The reversal of 30853656 is 65635803.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 30853656.

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, 71205 + ... + 71636.

Almost surely, 2^30853656 is an apocalyptic number.

30853656 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30853656 is an abundant number, since it is smaller than the sum of its proper divisors (54851544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30853656 is a wasteful number, since it uses less digits than its factorization.

30853656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142856 (or 142846 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 30853656 is about 5554.6067367546. The cubic root of 30853656 is about 313.6429603699.

The spelling of 30853656 in words is "thirty million, eight hundred fifty-three thousand, six hundred fifty-six".