402406010032 has 80 divisors (see below), whose sum is σ = 854390628000. Its totient is φ = 182465943552.

The previous prime is 402406010011. The next prime is 402406010051. The reversal of 402406010032 is 230010604204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402406009985 and 402406010012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21945444 + ... + 21963772.

It is an arithmetic number, because the mean of its divisors is an integer number (10679882850).

Almost surely, 2^402406010032 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 402406010032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427195314000).

402406010032 is an abundant number, since it is smaller than the sum of its proper divisors (451984617968).

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

402406010032 is a wasteful number, since it uses less digits than its factorization.

402406010032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20198 (or 20192 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 402406010032 its reverse (230010604204), we get a palindrome (632416614236).

The spelling of 402406010032 in words is "four hundred two billion, four hundred six million, ten thousand, thirty-two".