40857760 has 24 divisors (see below), whose sum is σ = 96526836. Its totient is φ = 16343040.

The previous prime is 40857757. The next prime is 40857769. The reversal of 40857760 is 6775804.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 37994896 + 2862864 = 6164^2 + 1692^2 .

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40857769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127521 + ... + 127840.

Almost surely, 2^40857760 is an apocalyptic number.

40857760 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40857760 is an abundant number, since it is smaller than the sum of its proper divisors (55669076).

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

40857760 is a wasteful number, since it uses less digits than its factorization.

40857760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255376 (or 255368 counting only the distinct ones).

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 40857760 is about 6392.0075093823. The cubic root of 40857760 is about 344.4225023214.

The spelling of 40857760 in words is "forty million, eight hundred fifty-seven thousand, seven hundred sixty".