402423736 has 96 divisors (see below), whose sum is σ = 904261680. Its totient is φ = 166763520.

The previous prime is 402423727. The next prime is 402423739. The reversal of 402423736 is 637324204.

It is a junction number, because it is equal to n+sod(n) for n = 402423698 and 402423707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402423739) 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, 1421851 + ... + 1422133.

Almost surely, 2^402423736 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 402423736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (452130840).

402423736 is an abundant number, since it is smaller than the sum of its proper divisors (501837944).

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

402423736 is a wasteful number, since it uses less digits than its factorization.

402423736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 402423736 is about 20060.5018880386. The cubic root of 402423736 is about 738.2914906243.

The spelling of 402423736 in words is "four hundred two million, four hundred twenty-three thousand, seven hundred thirty-six".