402665472 has 208 divisors, whose sum is σ = 1305317760. Its totient is φ = 121651200.

The previous prime is 402665467. The next prime is 402665491. The reversal of 402665472 is 274566204.

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

It is a zygodrome in base 2.

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, 1216347 + ... + 1216677.

Almost surely, 2^402665472 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 402665472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652658880).

402665472 is an abundant number, since it is smaller than the sum of its proper divisors (902652288).

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

402665472 is a wasteful number, since it uses less digits than its factorization.

402665472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375 (or 347 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 402665472 is about 20066.5261567617. The cubic root of 402665472 is about 738.4392916375.

The spelling of 402665472 in words is "four hundred two million, six hundred sixty-five thousand, four hundred seventy-two".