40640302 has 16 divisors (see below), whose sum is σ = 64672560. Its totient is φ = 19087488.

The previous prime is 40640239. The next prime is 40640311. The reversal of 40640302 is 20304604.

It is a self number, because there is not a number n which added to its sum of digits gives 40640302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24949 + ... + 26527.

It is an arithmetic number, because the mean of its divisors is an integer number (4042035).

Almost surely, 2^40640302 is an apocalyptic number.

40640302 is a deficient number, since it is larger than the sum of its proper divisors (24032258).

40640302 is a wasteful number, since it uses less digits than its factorization.

40640302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 40640302 is about 6374.9746666163. The cubic root of 40640302 is about 343.8103729993.

Adding to 40640302 its reverse (20304604), we get a palindrome (60944906).

The spelling of 40640302 in words is "forty million, six hundred forty thousand, three hundred two".