402068040 has 64 divisors (see below), whose sum is σ = 1315863360. Its totient is φ = 97470720.

The previous prime is 402068039. The next prime is 402068041. The reversal of 402068040 is 40860204.

It is an interprime number because it is at equal distance from previous prime (402068039) and next prime (402068041).

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 402068040.

It is not an unprimeable number, because it can be changed into a prime (402068041) 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, 150979 + ... + 153618.

It is an arithmetic number, because the mean of its divisors is an integer number (20560365).

Almost surely, 2^402068040 is an apocalyptic number.

402068040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402068040 is an abundant number, since it is smaller than the sum of its proper divisors (913795320).

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

402068040 is a wasteful number, since it uses less digits than its factorization.

402068040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304622 (or 304618 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 402068040 is about 20051.6343473543. The cubic root of 402068040 is about 738.0739050994.

The spelling of 402068040 in words is "four hundred two million, sixty-eight thousand, forty".