30974520 has 64 divisors (see below), whose sum is σ = 93312000. Its totient is φ = 8225408.

The previous prime is 30974483. The next prime is 30974539. The reversal of 30974520 is 2547903.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42721 + ... + 43439.

It is an arithmetic number, because the mean of its divisors is an integer number (1458000).

Almost surely, 2^30974520 is an apocalyptic number.

30974520 is a gapful number since it is divisible by the number (30) 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 30974520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46656000).

30974520 is an abundant number, since it is smaller than the sum of its proper divisors (62337480).

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

30974520 is a wasteful number, since it uses less digits than its factorization.

30974520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 30974520 is about 5565.4757209065. The cubic root of 30974520 is about 314.0519745736.

The spelling of 30974520 in words is "thirty million, nine hundred seventy-four thousand, five hundred twenty".