402406624080 has 80 divisors (see below), whose sum is σ = 1386067268160. Its totient is φ = 107308432512.

The previous prime is 402406624073. The next prime is 402406624129. The reversal of 402406624080 is 80426604204.

It is a happy number.

402406624080 is a `hidden beast` number, since 4 + 0 + 2 + 406 + 6 + 240 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×402406624080² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 93147522 + ... + 93151841.

It is an arithmetic number, because the mean of its divisors is an integer number (17325840852).

Almost surely, 2^402406624080 is an apocalyptic number.

402406624080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402406624080 is an abundant number, since it is smaller than the sum of its proper divisors (983660644080).

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

402406624080 is a wasteful number, since it uses less digits than its factorization.

402406624080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186299385 (or 186299373 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 402406624080 in words is "four hundred two billion, four hundred six million, six hundred twenty-four thousand, eighty".