402040068 has 24 divisors (see below), whose sum is σ = 958054272. Its totient is φ = 131161824.

The previous prime is 402040043. The next prime is 402040073. The reversal of 402040068 is 860040204.

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, 355855 + ... + 356982.

It is an arithmetic number, because the mean of its divisors is an integer number (39918928).

Almost surely, 2^402040068 is an apocalyptic number.

It is an amenable number.

402040068 is an abundant number, since it is smaller than the sum of its proper divisors (556014204).

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

402040068 is a wasteful number, since it uses less digits than its factorization.

402040068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712891 (or 712889 counting only the distinct ones).

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

The square root of 402040068 is about 20050.9368359685. The cubic root of 402040068 is about 738.0567886912.

The spelling of 402040068 in words is "four hundred two million, forty thousand, sixty-eight".