402165340 has 24 divisors (see below), whose sum is σ = 846114192. Its totient is φ = 160567680.

The previous prime is 402165317. The next prime is 402165347. The reversal of 402165340 is 43561204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402165347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7441 + ... + 29320.

It is an arithmetic number, because the mean of its divisors is an integer number (35254758).

Almost surely, 2^402165340 is an apocalyptic number.

It is an amenable number.

402165340 is an abundant number, since it is smaller than the sum of its proper divisors (443948852).

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

402165340 is a wasteful number, since it uses less digits than its factorization.

402165340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37317 (or 37315 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 402165340 is about 20054.0604367295. The cubic root of 402165340 is about 738.1334379741.

The spelling of 402165340 in words is "four hundred two million, one hundred sixty-five thousand, three hundred forty".