40307916 has 24 divisors (see below), whose sum is σ = 102602304. Its totient is φ = 12214480.

The previous prime is 40307909. The next prime is 40307947. The reversal of 40307916 is 61970304.

It is a happy number.

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, 152550 + ... + 152813.

It is an arithmetic number, because the mean of its divisors is an integer number (4275096).

Almost surely, 2^40307916 is an apocalyptic number.

It is an amenable number.

40307916 is an abundant number, since it is smaller than the sum of its proper divisors (62294388).

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

40307916 is a wasteful number, since it uses less digits than its factorization.

40307916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305381 (or 305379 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 40307916 is about 6348.8515496899. The cubic root of 40307916 is about 342.8704954125.

The spelling of 40307916 in words is "forty million, three hundred seven thousand, nine hundred sixteen".