40387668 has 48 divisors (see below), whose sum is σ = 98058240. Its totient is φ = 12924000.

The previous prime is 40387663. The next prime is 40387687. The reversal of 40387668 is 86678304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40387663) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55813 + ... + 56531.

It is an arithmetic number, because the mean of its divisors is an integer number (2042880).

Almost surely, 2^40387668 is an apocalyptic number.

It is an amenable number.

40387668 is an abundant number, since it is smaller than the sum of its proper divisors (57670572).

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

40387668 is a wasteful number, since it uses less digits than its factorization.

40387668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908 (or 906 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 40387668 is about 6355.1292669780. The cubic root of 40387668 is about 343.0964774351.

The spelling of 40387668 in words is "forty million, three hundred eighty-seven thousand, six hundred sixty-eight".