402402411 has 24 divisors (see below), whose sum is σ = 628992000. Its totient is φ = 256600872.

The previous prime is 402402401. The next prime is 402402419. The reversal of 402402411 is 114204204.

It is not a de Polignac number, because 402402411 - 2¹⁷ = 402271339 is a prime.

It is a super-2 number, since 2×402402411² = 323855400757225842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (402402419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30411 + ... + 41588.

It is an arithmetic number, because the mean of its divisors is an integer number (26208000).

Almost surely, 2^402402411 is an apocalyptic number.

402402411 is a deficient number, since it is larger than the sum of its proper divisors (226589589).

402402411 is an equidigital number, since it uses as much as digits as its factorization.

402402411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72037 (or 72025 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 402402411 is about 20059.9703638864. The cubic root of 402402411 is about 738.2784493590.

Adding to 402402411 its reverse (114204204), we get a palindrome (516606615).

The spelling of 402402411 in words is "four hundred two million, four hundred two thousand, four hundred eleven".