40802657 has 16 divisors (see below), whose sum is σ = 47984640. Its totient is φ = 33968592.

The previous prime is 40802653. The next prime is 40802659. The reversal of 40802657 is 75620804.

40802657 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40802657 - 2² = 40802653 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40802651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84944 + ... + 85422.

It is an arithmetic number, because the mean of its divisors is an integer number (2999040).

Almost surely, 2^40802657 is an apocalyptic number.

It is an amenable number.

40802657 is a deficient number, since it is larger than the sum of its proper divisors (7181983).

40802657 is a wasteful number, since it uses less digits than its factorization.

40802657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812.

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 40802657 is about 6387.6957504252. The cubic root of 40802657 is about 344.2675970153.

The spelling of 40802657 in words is "forty million, eight hundred two thousand, six hundred fifty-seven".