402108512 has 48 divisors (see below), whose sum is σ = 855716400. Its totient is φ = 184899072.

The previous prime is 402108503. The next prime is 402108527. The reversal of 402108512 is 215801204.

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, 120239 + ... + 123537.

It is an arithmetic number, because the mean of its divisors is an integer number (17827425).

Almost surely, 2^402108512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402108512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427858200).

402108512 is an abundant number, since it is smaller than the sum of its proper divisors (453607888).

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

402108512 is a wasteful number, since it uses less digits than its factorization.

402108512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3615 (or 3607 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 402108512 is about 20052.6435165043. The cubic root of 402108512 is about 738.0986690049.

Adding to 402108512 its reverse (215801204), we get a palindrome (617909716).

The spelling of 402108512 in words is "four hundred two million, one hundred eight thousand, five hundred twelve".