40640980 has 24 divisors (see below), whose sum is σ = 85800960. Its totient is φ = 16169760.

The previous prime is 40640939. The next prime is 40640993. The reversal of 40640980 is 8904604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1500 + ... + 9139.

It is an arithmetic number, because the mean of its divisors is an integer number (3575040).

Almost surely, 2^40640980 is an apocalyptic number.

It is an amenable number.

40640980 is an abundant number, since it is smaller than the sum of its proper divisors (45159980).

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

40640980 is a wasteful number, since it uses less digits than its factorization.

40640980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10839 (or 10837 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 40640980 is about 6375.0278430765. The cubic root of 40640980 is about 343.8122849121.

The spelling of 40640980 in words is "forty million, six hundred forty thousand, nine hundred eighty".