57999780 has 96 divisors (see below), whose sum is σ = 189974400. Its totient is φ = 14649984.

The previous prime is 57999769. The next prime is 57999811. The reversal of 57999780 is 8799975.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 31 ways as a sum of consecutive naturals, for example, 7434 + ... + 13086.

It is an arithmetic number, because the mean of its divisors is an integer number (1978900).

Almost surely, 2^57999780 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 57999780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94987200).

57999780 is an abundant number, since it is smaller than the sum of its proper divisors (131974620).

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

57999780 is a wasteful number, since it uses less digits than its factorization.

57999780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5690 (or 5682 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 57999780 is about 7615.7586621426. The cubic root of 57999780 is about 387.0871746410.

The spelling of 57999780 in words is "fifty-seven million, nine hundred ninety-nine thousand, seven hundred eighty".