402622640260 has 48 divisors (see below), whose sum is σ = 868743434160. Its totient is φ = 156627025920.

The previous prime is 402622640249. The next prime is 402622640281. The reversal of 402622640260 is 62046226204.

It can be written as a sum of positive squares in 8 ways, for example, as 17808368704 + 384814271556 = 133448^2 + 620334^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1568676 + ... + 1807204.

It is an arithmetic number, because the mean of its divisors is an integer number (18098821545).

Almost surely, 2^402622640260 is an apocalyptic number.

It is an amenable number.

402622640260 is an abundant number, since it is smaller than the sum of its proper divisors (466120793900).

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

402622640260 is a wasteful number, since it uses less digits than its factorization.

402622640260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240856 (or 240854 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 34.

Adding to 402622640260 its reverse (62046226204), we get a palindrome (464668866464).

The spelling of 402622640260 in words is "four hundred two billion, six hundred twenty-two million, six hundred forty thousand, two hundred sixty".