6402426400 has 36 divisors (see below), whose sum is σ = 15629925402. Its totient is φ = 2560970240.

The previous prime is 6402426379. The next prime is 6402426449. The reversal of 6402426400 is 46242046.

It can be written as a sum of positive squares in 3 ways, for example, as 5317909776 + 1084516624 = 72924^2 + 32932^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4000717 + ... + 4002316.

Almost surely, 2^6402426400 is an apocalyptic number.

It is an amenable number.

6402426400 is an abundant number, since it is smaller than the sum of its proper divisors (9227499002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6402426400 is a wasteful number, since it uses less digits than its factorization.

6402426400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003053 (or 8003040 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 6402426400 is about 80015.1635629147. The cubic root of 6402426400 is about 1856.8701361152.

Adding to 6402426400 its reverse (46242046), we get a palindrome (6448668446).

The spelling of 6402426400 in words is "six billion, four hundred two million, four hundred twenty-six thousand, four hundred".