402262440 has 32 divisors (see below), whose sum is σ = 1206787680. Its totient is φ = 107269952.

The previous prime is 402262411. The next prime is 402262481. The reversal of 402262440 is 44262204.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 402262440.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1675974 + ... + 1676213.

It is an arithmetic number, because the mean of its divisors is an integer number (37712115).

Almost surely, 2^402262440 is an apocalyptic number.

402262440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402262440 is an abundant number, since it is smaller than the sum of its proper divisors (804525240).

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

402262440 is a wasteful number, since it uses less digits than its factorization.

402262440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352201 (or 3352197 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 402262440 is about 20056.4812467192. The cubic root of 402262440 is about 738.1928389071.

The spelling of 402262440 in words is "four hundred two million, two hundred sixty-two thousand, four hundred forty".