57213702 has 80 divisors (see below), whose sum is σ = 157826592. Its totient is φ = 15085440.

The previous prime is 57213691. The next prime is 57213727. The reversal of 57213702 is 20731275.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 12802 + ... + 16682.

Almost surely, 2^57213702 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57213702, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78913296).

57213702 is an abundant number, since it is smaller than the sum of its proper divisors (100612890).

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

57213702 is a wasteful number, since it uses less digits than its factorization.

57213702 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3915 (or 3906 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 57213702 is about 7563.9739555342. The cubic root of 57213702 is about 385.3304679315.

Adding to 57213702 its reverse (20731275), we get a palindrome (77944977).

The spelling of 57213702 in words is "fifty-seven million, two hundred thirteen thousand, seven hundred two".