402844316 has 24 divisors (see below), whose sum is σ = 806123136. Its totient is φ = 172554480.

The previous prime is 402844313. The next prime is 402844319. The reversal of 402844316 is 613448204.

It is an interprime number because it is at equal distance from previous prime (402844313) and next prime (402844319).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402844313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83531 + ... + 88221.

It is an arithmetic number, because the mean of its divisors is an integer number (33588464).

Almost surely, 2^402844316 is an apocalyptic number.

It is an amenable number.

402844316 is an abundant number, since it is smaller than the sum of its proper divisors (403278820).

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

402844316 is a wasteful number, since it uses less digits than its factorization.

402844316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7769 (or 7767 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 402844316 is about 20070.9819391080. The cubic root of 402844316 is about 738.5486014727.

The spelling of 402844316 in words is "four hundred two million, eight hundred forty-four thousand, three hundred sixteen".