6402400724 has 24 divisors (see below), whose sum is σ = 11526157440. Its totient is φ = 3110207936.

The previous prime is 6402400723. The next prime is 6402400751. The reversal of 6402400724 is 4270042046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6402400723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98534 + ... + 150045.

It is an arithmetic number, because the mean of its divisors is an integer number (480256560).

Almost surely, 2^6402400724 is an apocalyptic number.

It is an amenable number.

6402400724 is a deficient number, since it is larger than the sum of its proper divisors (5123756716).

6402400724 is a wasteful number, since it uses less digits than its factorization.

6402400724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248767 (or 248765 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The square root of 6402400724 is about 80015.0031181653. The cubic root of 6402400724 is about 1856.8676538760.

The spelling of 6402400724 in words is "six billion, four hundred two million, four hundred thousand, seven hundred twenty-four".