30986136 has 48 divisors (see below), whose sum is σ = 84177600. Its totient is φ = 10297152.

The previous prime is 30986117. The next prime is 30986147. The reversal of 30986136 is 63168903.

It is a happy number.

30986136 is a `hidden beast` number, since 30 + 9 + 8 + 613 + 6 = 666.

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 30986136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43350 + ... + 44058.

It is an arithmetic number, because the mean of its divisors is an integer number (1753700).

Almost surely, 2^30986136 is an apocalyptic number.

30986136 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

30986136 is an abundant number, since it is smaller than the sum of its proper divisors (53191464).

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

30986136 is a wasteful number, since it uses less digits than its factorization.

30986136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1328 (or 1321 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 30986136 is about 5566.5191996435. The cubic root of 30986136 is about 314.0912280397.

The spelling of 30986136 in words is "thirty million, nine hundred eighty-six thousand, one hundred thirty-six".