57267780 has 48 divisors (see below), whose sum is σ = 160923840. Its totient is φ = 15216768.

The previous prime is 57267751. The next prime is 57267841. The reversal of 57267780 is 8776275.

57267780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57267780² = 6559197252256800, which contains 22 as substring.

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, 16866 + ... + 19974.

It is an arithmetic number, because the mean of its divisors is an integer number (3352580).

Almost surely, 2^57267780 is an apocalyptic number.

It is an amenable number.

57267780 is an abundant number, since it is smaller than the sum of its proper divisors (103656060).

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

57267780 is a wasteful number, since it uses less digits than its factorization.

57267780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428 (or 3426 counting only the distinct ones).

The product of its (nonzero) digits is 164640, while the sum is 42.

The square root of 57267780 is about 7567.5478194723. The cubic root of 57267780 is about 385.4518336096.

The spelling of 57267780 in words is "fifty-seven million, two hundred sixty-seven thousand, seven hundred eighty".