40687308 has 36 divisors (see below), whose sum is σ = 103092808. Its totient is φ = 13530240.

The previous prime is 40687301. The next prime is 40687321. The reversal of 40687308 is 80378604.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (40687301) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17748 + ... + 19908.

Almost surely, 2^40687308 is an apocalyptic number.

It is an amenable number.

40687308 is an abundant number, since it is smaller than the sum of its proper divisors (62405500).

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

40687308 is a wasteful number, since it uses less digits than its factorization.

40687308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2694 (or 2689 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 40687308 is about 6378.6603609222. The cubic root of 40687308 is about 343.9428763088.

The spelling of 40687308 in words is "forty million, six hundred eighty-seven thousand, three hundred eight".