40978576 has 20 divisors (see below), whose sum is σ = 79933500. Its totient is φ = 20350592.

The previous prime is 40978543. The next prime is 40978579. The reversal of 40978576 is 67587904.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22316176 + 18662400 = 4724^2 + 4320^2 .

It is not an unprimeable number, because it can be changed into a prime (40978579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6211 + ... + 10978.

It is an arithmetic number, because the mean of its divisors is an integer number (3996675).

Almost surely, 2^40978576 is an apocalyptic number.

It is an amenable number.

40978576 is a deficient number, since it is larger than the sum of its proper divisors (38954924).

40978576 is a wasteful number, since it uses less digits than its factorization.

40978576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17346 (or 17340 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 46.

The square root of 40978576 is about 6401.4510854962. The cubic root of 40978576 is about 344.7616529185.

The spelling of 40978576 in words is "forty million, nine hundred seventy-eight thousand, five hundred seventy-six".