40006988 has 24 divisors (see below), whose sum is σ = 82596864. Its totient is φ = 16592400.

The previous prime is 40006969. The next prime is 40006991. The reversal of 40006988 is 88960004.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 22178 + ... + 23913.

It is an arithmetic number, because the mean of its divisors is an integer number (3441536).

Almost surely, 2^40006988 is an apocalyptic number.

It is an amenable number.

40006988 is an abundant number, since it is smaller than the sum of its proper divisors (42589876).

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

40006988 is a wasteful number, since it uses less digits than its factorization.

40006988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46133 (or 46131 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 40006988 is about 6325.1077461178. The cubic root of 40006988 is about 342.0151036956.

The spelling of 40006988 in words is "forty million, six thousand, nine hundred eighty-eight".