402015522 has 16 divisors (see below), whose sum is σ = 809817120. Its totient is φ = 133040832.

The previous prime is 402015521. The next prime is 402015527. The reversal of 402015522 is 225510204.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (402015521) 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, 240183 + ... + 241850.

It is an arithmetic number, because the mean of its divisors is an integer number (50613570).

Almost surely, 2^402015522 is an apocalyptic number.

402015522 is an abundant number, since it is smaller than the sum of its proper divisors (407801598).

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

402015522 is a wasteful number, since it uses less digits than its factorization.

402015522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482177.

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 402015522 is about 20050.3247355249. The cubic root of 402015522 is about 738.0417680402.

Adding to 402015522 its reverse (225510204), we get a palindrome (627525726).

The spelling of 402015522 in words is "four hundred two million, fifteen thousand, five hundred twenty-two".