402563090 has 16 divisors (see below), whose sum is σ = 738286488. Its totient is φ = 157986816.

The previous prime is 402563081. The next prime is 402563093. The reversal of 402563090 is 90365204.

It can be written as a sum of positive squares in 4 ways, for example, as 299601481 + 102961609 = 17309^2 + 10147^2 .

It is not an unprimeable number, because it can be changed into a prime (402563093) 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, 379247 + ... + 380306.

Almost surely, 2^402563090 is an apocalyptic number.

402563090 is a deficient number, since it is larger than the sum of its proper divisors (335723398).

402563090 is a wasteful number, since it uses less digits than its factorization.

402563090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759613.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 402563090 is about 20063.9749302076. The cubic root of 402563090 is about 738.3767009716.

The spelling of 402563090 in words is "four hundred two million, five hundred sixty-three thousand, ninety".