402472980 has 144 divisors (see below), whose sum is σ = 1502626944. Its totient is φ = 84913920.

The previous prime is 402472979. The next prime is 402473063. The reversal of 402472980 is 89274204.

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 47 ways as a sum of consecutive naturals, for example, 4095 + ... + 28665.

Almost surely, 2^402472980 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 402472980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (751313472).

402472980 is an abundant number, since it is smaller than the sum of its proper divisors (1100153964).

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

402472980 is a wasteful number, since it uses less digits than its factorization.

402472980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24606 (or 24601 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 402472980 is about 20061.7292375308. The cubic root of 402472980 is about 738.3216039436.

The spelling of 402472980 in words is "four hundred two million, four hundred seventy-two thousand, nine hundred eighty".