402478692 has 48 divisors (see below), whose sum is σ = 1170849792. Its totient is φ = 104539680.

The previous prime is 402478663. The next prime is 402478697. The reversal of 402478692 is 296874204.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (402478697) 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, 216868 + ... + 218715.

It is an arithmetic number, because the mean of its divisors is an integer number (24392704).

Almost surely, 2^402478692 is an apocalyptic number.

402478692 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

402478692 is an abundant number, since it is smaller than the sum of its proper divisors (768371100).

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

402478692 is a wasteful number, since it uses less digits than its factorization.

402478692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435608 (or 435606 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 402478692 is about 20061.8715976352. The cubic root of 402478692 is about 738.3250967437.

The spelling of 402478692 in words is "four hundred two million, four hundred seventy-eight thousand, six hundred ninety-two".