30722472 has 48 divisors (see below), whose sum is σ = 90773280. Its totient is φ = 9309600.

The previous prime is 30722431. The next prime is 30722473. The reversal of 30722472 is 27422703.

It is not an unprimeable number, because it can be changed into a prime (30722473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18604 + ... + 20187.

It is an arithmetic number, because the mean of its divisors is an integer number (1891110).

Almost surely, 2^30722472 is an apocalyptic number.

It is an amenable number.

30722472 is an abundant number, since it is smaller than the sum of its proper divisors (60050808).

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

30722472 is a wasteful number, since it uses less digits than its factorization.

30722472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38814 (or 38807 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 30722472 is about 5542.7855812759. The cubic root of 30722472 is about 313.1978117217.

The spelling of 30722472 in words is "thirty million, seven hundred twenty-two thousand, four hundred seventy-two".