57929820 has 144 divisors (see below), whose sum is σ = 182619360. Its totient is φ = 13698048.

The previous prime is 57929819. The next prime is 57929857. The reversal of 57929820 is 2892975.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293962 + ... + 294158.

It is an arithmetic number, because the mean of its divisors is an integer number (1268190).

Almost surely, 2^57929820 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 57929820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91309680).

57929820 is an abundant number, since it is smaller than the sum of its proper divisors (124689540).

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

57929820 is a wasteful number, since it uses less digits than its factorization.

57929820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 57929820 is about 7611.1641685093. The cubic root of 57929820 is about 386.9314756920.

The spelling of 57929820 in words is "fifty-seven million, nine hundred twenty-nine thousand, eight hundred twenty".