40857538 has 8 divisors (see below), whose sum is σ = 62201232. Its totient is φ = 20123796.

The previous prime is 40857517. The next prime is 40857547. The reversal of 40857538 is 83575804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×40857538² = 3338676822842888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40857538.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152320 + ... + 152587.

It is an arithmetic number, because the mean of its divisors is an integer number (7775154).

Almost surely, 2^40857538 is an apocalyptic number.

40857538 is a deficient number, since it is larger than the sum of its proper divisors (21343694).

40857538 is a wasteful number, since it uses less digits than its factorization.

40857538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304976.

The product of its (nonzero) digits is 134400, while the sum is 40.

The square root of 40857538 is about 6391.9901439223. The cubic root of 40857538 is about 344.4218785155.

The spelling of 40857538 in words is "forty million, eight hundred fifty-seven thousand, five hundred thirty-eight".