7640402 has 16 divisors (see below), whose sum is σ = 14288832. Its totient is φ = 2976720.

The previous prime is 7640377. The next prime is 7640411. The reversal of 7640402 is 2040467.

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, 24653 + ... + 24960.

It is an arithmetic number, because the mean of its divisors is an integer number (893052).

Almost surely, 2^7640402 is an apocalyptic number.

7640402 is a deficient number, since it is larger than the sum of its proper divisors (6648430).

7640402 is a wasteful number, since it uses less digits than its factorization.

7640402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49633.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 7640402 is about 2764.1277105083. The cubic root of 7640402 is about 196.9572944612.

Adding to 7640402 its reverse (2040467), we get a palindrome (9680869).

The spelling of 7640402 in words is "seven million, six hundred forty thousand, four hundred two".