30536840 has 64 divisors (see below), whose sum is σ = 72230400. Its totient is φ = 11605248.

The previous prime is 30536839. The next prime is 30536867. The reversal of 30536840 is 4863503.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69341 + ... + 69779.

It is an arithmetic number, because the mean of its divisors is an integer number (1128600).

Almost surely, 2^30536840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30536840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36115200).

30536840 is an abundant number, since it is smaller than the sum of its proper divisors (41693560).

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

30536840 is a wasteful number, since it uses less digits than its factorization.

30536840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 530 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 30536840 is about 5526.0148389233. The cubic root of 30536840 is about 312.5657333722.

The spelling of 30536840 in words is "thirty million, five hundred thirty-six thousand, eight hundred forty".