402723356 has 72 divisors (see below), whose sum is σ = 858009600. Its totient is φ = 164717280.

The previous prime is 402723331. The next prime is 402723359. The reversal of 402723356 is 653327204.

It is a super-2 number, since 2×402723356² = 324372202935805472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402723359) 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, 479585 + ... + 480423.

It is an arithmetic number, because the mean of its divisors is an integer number (11916800).

Almost surely, 2^402723356 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 402723356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (429004800).

402723356 is an abundant number, since it is smaller than the sum of its proper divisors (455286244).

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

402723356 is a wasteful number, since it uses less digits than its factorization.

402723356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 958 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 32.

The square root of 402723356 is about 20067.9684073899. The cubic root of 402723356 is about 738.4746740040.

The spelling of 402723356 in words is "four hundred two million, seven hundred twenty-three thousand, three hundred fifty-six".