40518780 has 24 divisors (see below), whose sum is σ = 113452752. Its totient is φ = 10804992.

The previous prime is 40518761. The next prime is 40518787. The reversal of 40518780 is 8781504.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40518787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337597 + ... + 337716.

It is an arithmetic number, because the mean of its divisors is an integer number (4727198).

Almost surely, 2^40518780 is an apocalyptic number.

It is an amenable number.

40518780 is an abundant number, since it is smaller than the sum of its proper divisors (72933972).

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

40518780 is a wasteful number, since it uses less digits than its factorization.

40518780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675325 (or 675323 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 40518780 is about 6365.4363558204. The cubic root of 40518780 is about 343.4673453869.

The spelling of 40518780 in words is "forty million, five hundred eighteen thousand, seven hundred eighty".