40687860 has 48 divisors (see below), whose sum is σ = 114250752. Its totient is φ = 10819200.

The previous prime is 40687859. The next prime is 40687891. The reversal of 40687860 is 6878604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26925 + ... + 28395.

It is an arithmetic number, because the mean of its divisors is an integer number (2380224).

Almost surely, 2^40687860 is an apocalyptic number.

It is an amenable number.

40687860 is an abundant number, since it is smaller than the sum of its proper divisors (73562892).

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

40687860 is a wasteful number, since it uses less digits than its factorization.

40687860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 40687860 is about 6378.7036300490. The cubic root of 40687860 is about 343.9444317129.

The spelling of 40687860 in words is "forty million, six hundred eighty-seven thousand, eight hundred sixty".