402840627 has 16 divisors (see below), whose sum is σ = 614141952. Its totient is φ = 230086080.

The previous prime is 402840623. The next prime is 402840631. The reversal of 402840627 is 726048204.

It is an interprime number because it is at equal distance from previous prime (402840623) and next prime (402840631).

It is not a de Polignac number, because 402840627 - 2² = 402840623 is a prime.

It is not an unprimeable number, because it can be changed into a prime (402840623) 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, 68383 + ... + 74039.

It is an arithmetic number, because the mean of its divisors is an integer number (38383872).

Almost surely, 2^402840627 is an apocalyptic number.

402840627 is a deficient number, since it is larger than the sum of its proper divisors (211301325).

402840627 is a wasteful number, since it uses less digits than its factorization.

402840627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9058.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 402840627 is about 20070.8900400555. The cubic root of 402840627 is about 738.5463470749.

The spelling of 402840627 in words is "four hundred two million, eight hundred forty thousand, six hundred twenty-seven".