402799530 has 96 divisors (see below), whose sum is σ = 1173810816. Its totient is φ = 86639616.

The previous prime is 402799499. The next prime is 402799559. The reversal of 402799530 is 35997204.

It is a super-2 number, since 2×402799530² = 324494922736441800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 57372 + ... + 64008.

It is an arithmetic number, because the mean of its divisors is an integer number (12227196).

Almost surely, 2^402799530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402799530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (586905408).

402799530 is an abundant number, since it is smaller than the sum of its proper divisors (771011286).

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

402799530 is a wasteful number, since it uses less digits than its factorization.

402799530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6688 (or 6671 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 402799530 is about 20069.8662177903. The cubic root of 402799530 is about 738.5212312107.

The spelling of 402799530 in words is "four hundred two million, seven hundred ninety-nine thousand, five hundred thirty".