402745392 has 80 divisors (see below), whose sum is σ = 1321185280. Its totient is φ = 115069248.

The previous prime is 402745391. The next prime is 402745429. The reversal of 402745392 is 293547204.

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

It is not an unprimeable number, because it can be changed into a prime (402745391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63568 + ... + 69615.

It is an arithmetic number, because the mean of its divisors is an integer number (16514816).

Almost surely, 2^402745392 is an apocalyptic number.

402745392 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

402745392 is an abundant number, since it is smaller than the sum of its proper divisors (918439888).

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

402745392 is a wasteful number, since it uses less digits than its factorization.

402745392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133207 (or 133195 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 402745392 is about 20068.5174340308. The cubic root of 402745392 is about 738.4881429117.

The spelling of 402745392 in words is "four hundred two million, seven hundred forty-five thousand, three hundred ninety-two".