57706890 has 32 divisors (see below), whose sum is σ = 139358016. Its totient is φ = 15292800.

The previous prime is 57706879. The next prime is 57706907. The reversal of 57706890 is 9860775.

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 15 ways as a sum of consecutive naturals, for example, 1011 + ... + 10790.

It is an arithmetic number, because the mean of its divisors is an integer number (4354938).

Almost surely, 2^57706890 is an apocalyptic number.

57706890 is an abundant number, since it is smaller than the sum of its proper divisors (81651126).

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

57706890 is a wasteful number, since it uses less digits than its factorization.

57706890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11974.

The product of its (nonzero) digits is 105840, while the sum is 42.

The square root of 57706890 is about 7596.5051174866. The cubic root of 57706890 is about 386.4344977965.

The spelling of 57706890 in words is "fifty-seven million, seven hundred six thousand, eight hundred ninety".