30724976 has 40 divisors (see below), whose sum is σ = 63091200. Its totient is φ = 14454720.

The previous prime is 30724963. The next prime is 30724979. The reversal of 30724976 is 67942703.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30724979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63905 + ... + 64383.

It is an arithmetic number, because the mean of its divisors is an integer number (1577280).

Almost surely, 2^30724976 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 30724976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31545600).

30724976 is an abundant number, since it is smaller than the sum of its proper divisors (32366224).

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

30724976 is a wasteful number, since it uses less digits than its factorization.

30724976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 30724976 is about 5543.0114558785. The cubic root of 30724976 is about 313.2063204338.

The spelling of 30724976 in words is "thirty million, seven hundred twenty-four thousand, nine hundred seventy-six".