402072500 has 30 divisors (see below), whose sum is σ = 879257610. Its totient is φ = 160828000.

The previous prime is 402072481. The next prime is 402072521. The reversal of 402072500 is 5270204.

402072500 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 5 ways, for example, as 301230736 + 100841764 = 17356^2 + 10042^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 77915 + ... + 82914.

It is an arithmetic number, because the mean of its divisors is an integer number (29308587).

Almost surely, 2^402072500 is an apocalyptic number.

It is an amenable number.

402072500 is an abundant number, since it is smaller than the sum of its proper divisors (477185110).

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

402072500 is a wasteful number, since it uses less digits than its factorization.

402072500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160853 (or 160836 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 20.

The square root of 402072500 is about 20051.7455599257. The cubic root of 402072500 is about 738.0766341544.

The spelling of 402072500 in words is "four hundred two million, seventy-two thousand, five hundred".