402401330 has 32 divisors (see below), whose sum is σ = 767124864. Its totient is φ = 151658496.

The previous prime is 402401257. The next prime is 402401341. The reversal of 402401330 is 33104204.

It is a junction number, because it is equal to n+sod(n) for n = 402401299 and 402401308.

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, 2354 + ... + 28466.

It is an arithmetic number, because the mean of its divisors is an integer number (23972652).

Almost surely, 2^402401330 is an apocalyptic number.

402401330 is a deficient number, since it is larger than the sum of its proper divisors (364723534).

402401330 is a wasteful number, since it uses less digits than its factorization.

402401330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26210.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 402401330 is about 20059.9434196610. The cubic root of 402401330 is about 738.2777882631.

Adding to 402401330 its reverse (33104204), we get a palindrome (435505534).

The spelling of 402401330 in words is "four hundred two million, four hundred one thousand, three hundred thirty".