402623104 has 128 divisors (see below), whose sum is σ = 938710080. Its totient is φ = 170311680.

The previous prime is 402623093. The next prime is 402623107. The reversal of 402623104 is 401326204.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402623107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1216219 + ... + 1216549.

Almost surely, 2^402623104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402623104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469355040).

402623104 is an abundant number, since it is smaller than the sum of its proper divisors (536086976).

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

402623104 is a wasteful number, since it uses less digits than its factorization.

402623104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418 (or 406 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 402623104 is about 20065.4704405354. The cubic root of 402623104 is about 738.4133914834.

Adding to 402623104 its reverse (401326204), we get a palindrome (803949308).

The spelling of 402623104 in words is "four hundred two million, six hundred twenty-three thousand, one hundred four".