40978764 has 24 divisors (see below), whose sum is σ = 106241520. Its totient is φ = 13659552.

The previous prime is 40978757. The next prime is 40978787. The reversal of 40978764 is 46787904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189609 + ... + 189824.

It is an arithmetic number, because the mean of its divisors is an integer number (4426730).

Almost surely, 2^40978764 is an apocalyptic number.

It is an amenable number.

40978764 is an abundant number, since it is smaller than the sum of its proper divisors (65262756).

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

40978764 is a wasteful number, since it uses less digits than its factorization.

40978764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379446 (or 379438 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 45.

The square root of 40978764 is about 6401.4657696499. The cubic root of 40978764 is about 344.7621801460.

The spelling of 40978764 in words is "forty million, nine hundred seventy-eight thousand, seven hundred sixty-four".