57243738 has 32 divisors (see below), whose sum is σ = 118972800. Its totient is φ = 18339776.

The previous prime is 57243733. The next prime is 57243829. The reversal of 57243738 is 83734275.

It is a junction number, because it is equal to n+sod(n) for n = 57243696 and 57243705.

It is not an unprimeable number, because it can be changed into a prime (57243733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46195 + ... + 47417.

It is an arithmetic number, because the mean of its divisors is an integer number (3717900).

Almost surely, 2^57243738 is an apocalyptic number.

57243738 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

57243738 is an abundant number, since it is smaller than the sum of its proper divisors (61729062).

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

57243738 is a wasteful number, since it uses less digits than its factorization.

57243738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1526.

The product of its digits is 141120, while the sum is 39.

The square root of 57243738 is about 7565.9591592871. The cubic root of 57243738 is about 385.3978862876.

The spelling of 57243738 in words is "fifty-seven million, two hundred forty-three thousand, seven hundred thirty-eight".