40978502 has 16 divisors (see below), whose sum is σ = 65048832. Its totient is φ = 19320840.

The previous prime is 40978493. The next prime is 40978507. The reversal of 40978502 is 20587904.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40978507) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3008 + ... + 9539.

It is an arithmetic number, because the mean of its divisors is an integer number (4065552).

Almost surely, 2^40978502 is an apocalyptic number.

40978502 is a deficient number, since it is larger than the sum of its proper divisors (24070330).

40978502 is a wasteful number, since it uses less digits than its factorization.

40978502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12643.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 40978502 is about 6401.4453055541. The cubic root of 40978502 is about 344.7614453924.

The spelling of 40978502 in words is "forty million, nine hundred seventy-eight thousand, five hundred two".