30740512 has 48 divisors (see below), whose sum is σ = 68910912. Its totient is φ = 13361920.

The previous prime is 30740509. The next prime is 30740531. The reversal of 30740512 is 21504703.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 6198 + ... + 9994.

It is an arithmetic number, because the mean of its divisors is an integer number (1435644).

Almost surely, 2^30740512 is an apocalyptic number.

30740512 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30740512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34455456).

30740512 is an abundant number, since it is smaller than the sum of its proper divisors (38170400).

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

30740512 is a wasteful number, since it uses less digits than its factorization.

30740512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841 (or 3833 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 30740512 is about 5544.4126830531. The cubic root of 30740512 is about 313.2591021780.

The spelling of 30740512 in words is "thirty million, seven hundred forty thousand, five hundred twelve".