402812080 has 80 divisors (see below), whose sum is σ = 1025139744. Its totient is φ = 145981440.

The previous prime is 402812077. The next prime is 402812099. The reversal of 402812080 is 80218204.

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

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, 348784 + ... + 349936.

Almost surely, 2^402812080 is an apocalyptic number.

402812080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402812080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (512569872).

402812080 is an abundant number, since it is smaller than the sum of its proper divisors (622327664).

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

402812080 is a wasteful number, since it uses less digits than its factorization.

402812080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1574 (or 1568 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 402812080 is about 20070.1788731441. The cubic root of 402812080 is about 738.5289011511.

The spelling of 402812080 in words is "four hundred two million, eight hundred twelve thousand, eighty".