402180416 has 28 divisors (see below), whose sum is σ = 870630720. Its totient is φ = 182808960.

The previous prime is 402180413. The next prime is 402180421. The reversal of 402180416 is 614081204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402180413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284936 + ... + 286343.

Almost surely, 2^402180416 is an apocalyptic number.

It is an amenable number.

402180416 is an abundant number, since it is smaller than the sum of its proper divisors (468450304).

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

402180416 is a wasteful number, since it uses less digits than its factorization.

402180416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571302 (or 571292 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 402180416 is about 20054.4363171843. The cubic root of 402180416 is about 738.1426613453.

The spelling of 402180416 in words is "four hundred two million, one hundred eighty thousand, four hundred sixteen".