30722880 has 56 divisors (see below), whose sum is σ = 97548192. Its totient is φ = 8192512.

The previous prime is 30722851. The next prime is 30722903. The reversal of 30722880 is 8822703.

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 7 ways as a sum of consecutive naturals, for example, 15042 + ... + 16961.

It is an arithmetic number, because the mean of its divisors is an integer number (1741932).

Almost surely, 2^30722880 is an apocalyptic number.

30722880 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30722880 is an abundant number, since it is smaller than the sum of its proper divisors (66825312).

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

30722880 is a wasteful number, since it uses less digits than its factorization.

30722880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32023 (or 32013 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 30722880 is about 5542.8223857526. The cubic root of 30722880 is about 313.1991981568.

The spelling of 30722880 in words is "thirty million, seven hundred twenty-two thousand, eight hundred eighty".