40290368 has 14 divisors (see below), whose sum is σ = 79951326. Its totient is φ = 20145152.

The previous prime is 40290347. The next prime is 40290377. The reversal of 40290368 is 86309204.

It can be written as a sum of positive squares in only one way, i.e., 36096064 + 4194304 = 6008^2 + 2048^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 314705 + ... + 314832.

It is an arithmetic number, because the mean of its divisors is an integer number (5710809).

Almost surely, 2^40290368 is an apocalyptic number.

It is an amenable number.

40290368 is a deficient number, since it is larger than the sum of its proper divisors (39660958).

40290368 is an equidigital number, since it uses as much as digits as its factorization.

40290368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629549 (or 629539 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 40290368 is about 6347.4694170197. The cubic root of 40290368 is about 342.8207321122.

The spelling of 40290368 in words is "forty million, two hundred ninety thousand, three hundred sixty-eight".