40257516 has 24 divisors (see below), whose sum is σ = 101160304. Its totient is φ = 12386880.

The previous prime is 40257509. The next prime is 40257527. The reversal of 40257516 is 61575204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128875 + ... + 129186.

Almost surely, 2^40257516 is an apocalyptic number.

It is an amenable number.

40257516 is an abundant number, since it is smaller than the sum of its proper divisors (60902788).

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

40257516 is a wasteful number, since it uses less digits than its factorization.

40257516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258081 (or 258079 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 40257516 is about 6344.8810863562. The cubic root of 40257516 is about 342.7275302737.

The spelling of 40257516 in words is "forty million, two hundred fifty-seven thousand, five hundred sixteen".