57266420 has 36 divisors (see below), whose sum is σ = 121876524. Its totient is φ = 22602240.

The previous prime is 57266401. The next prime is 57266423. The reversal of 57266420 is 2466275.

It can be written as a sum of positive squares in 6 ways, for example, as 3888784 + 53377636 = 1972^2 + 7306^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57266423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 237500 + ... + 237740.

It is an arithmetic number, because the mean of its divisors is an integer number (3385459).

Almost surely, 2^57266420 is an apocalyptic number.

It is an amenable number.

57266420 is an abundant number, since it is smaller than the sum of its proper divisors (64610104).

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

57266420 is a wasteful number, since it uses less digits than its factorization.

57266420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468 (or 357 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 57266420 is about 7567.4579615615. The cubic root of 57266420 is about 385.4487823380.

The spelling of 57266420 in words is "fifty-seven million, two hundred sixty-six thousand, four hundred twenty".