402401622 has 96 divisors (see below), whose sum is σ = 979624800. Its totient is φ = 109734912.

The previous prime is 402401621. The next prime is 402401647. The reversal of 402401622 is 226104204.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402401621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 929118 + ... + 929550.

It is an arithmetic number, because the mean of its divisors is an integer number (10204425).

Almost surely, 2^402401622 is an apocalyptic number.

402401622 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 402401622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (489812400).

402401622 is an abundant number, since it is smaller than the sum of its proper divisors (577223178).

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

402401622 is a wasteful number, since it uses less digits than its factorization.

402401622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590 (or 583 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 402401622 is about 20059.9506978457. The cubic root of 402401622 is about 738.2779668386.

Adding to 402401622 its reverse (226104204), we get a palindrome (628505826).

The spelling of 402401622 in words is "four hundred two million, four hundred one thousand, six hundred twenty-two".