402244400 has 60 divisors (see below), whose sum is σ = 977337000. Its totient is φ = 159075840.

The previous prime is 402244397. The next prime is 402244411. The reversal of 402244400 is 4442204.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29951 + ... + 41249.

It is an arithmetic number, because the mean of its divisors is an integer number (16288950).

Almost surely, 2^402244400 is an apocalyptic number.

402244400 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402244400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (488668500).

402244400 is an abundant number, since it is smaller than the sum of its proper divisors (575092600).

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

402244400 is a wasteful number, since it uses less digits than its factorization.

402244400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11406 (or 11395 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

The square root of 402244400 is about 20056.0315117423. The cubic root of 402244400 is about 738.1818036587.

Adding to 402244400 its reverse (4442204), we get a palindrome (406686604).

The spelling of 402244400 in words is "four hundred two million, two hundred forty-four thousand, four hundred".