40402615 has 16 divisors (see below), whose sum is σ = 53066016. Its totient is φ = 29286400.

The previous prime is 40402603. The next prime is 40402619. The reversal of 40402615 is 51620404.

It is a de Polignac number, because none of the positive numbers 2^k-40402615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402619) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18375 + ... + 20455.

It is an arithmetic number, because the mean of its divisors is an integer number (3316626).

Almost surely, 2^40402615 is an apocalyptic number.

40402615 is a deficient number, since it is larger than the sum of its proper divisors (12663401).

40402615 is a wasteful number, since it uses less digits than its factorization.

40402615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 40402615 is about 6356.3051374206. The cubic root of 40402615 is about 343.1387975359.

The spelling of 40402615 in words is "forty million, four hundred two thousand, six hundred fifteen".