30749152 has 24 divisors (see below), whose sum is σ = 69186096. Its totient is φ = 13178112.

The previous prime is 30749143. The next prime is 30749189. The reversal of 30749152 is 25194703.

It is a congruent number.

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, 68413 + ... + 68860.

It is an arithmetic number, because the mean of its divisors is an integer number (2882754).

Almost surely, 2^30749152 is an apocalyptic number.

30749152 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30749152 is an abundant number, since it is smaller than the sum of its proper divisors (38436944).

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

30749152 is a wasteful number, since it uses less digits than its factorization.

30749152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137290 (or 137282 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 30749152 is about 5545.1917910925. The cubic root of 30749152 is about 313.2884478735.

The spelling of 30749152 in words is "thirty million, seven hundred forty-nine thousand, one hundred fifty-two".