30622920 has 32 divisors (see below), whose sum is σ = 91869120. Its totient is φ = 8166080.

The previous prime is 30622919. The next prime is 30622937. The reversal of 30622920 is 2922603.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 127476 + ... + 127715.

It is an arithmetic number, because the mean of its divisors is an integer number (2870910).

Almost surely, 2^30622920 is an apocalyptic number.

30622920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30622920 is an abundant number, since it is smaller than the sum of its proper divisors (61246200).

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

30622920 is a wasteful number, since it uses less digits than its factorization.

30622920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255205 (or 255201 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 24.

The square root of 30622920 is about 5533.7979724598. The cubic root of 30622920 is about 312.8591540021.

The spelling of 30622920 in words is "thirty million, six hundred twenty-two thousand, nine hundred twenty".