30628020 has 48 divisors (see below), whose sum is σ = 87591168. Its totient is φ = 7992960.

The previous prime is 30628009. The next prime is 30628043. The reversal of 30628020 is 2082603.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2611 + ... + 8250.

It is an arithmetic number, because the mean of its divisors is an integer number (1824816).

Almost surely, 2^30628020 is an apocalyptic number.

30628020 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30628020 is an abundant number, since it is smaller than the sum of its proper divisors (56963148).

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

30628020 is a wasteful number, since it uses less digits than its factorization.

30628020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10920 (or 10918 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 30628020 is about 5534.2587579549. The cubic root of 30628020 is about 312.8765210931.

The spelling of 30628020 in words is "thirty million, six hundred twenty-eight thousand, twenty".