402722766 has 40 divisors (see below), whose sum is σ = 907049880. Its totient is φ = 133548912.

The previous prime is 402722759. The next prime is 402722777. The reversal of 402722766 is 667227204.

It is a self number, because there is not a number n which added to its sum of digits gives 402722766.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 25605 + ... + 38223.

It is an arithmetic number, because the mean of its divisors is an integer number (22676247).

Almost surely, 2^402722766 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402722766, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453524940).

402722766 is an abundant number, since it is smaller than the sum of its proper divisors (504327114).

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

402722766 is a wasteful number, since it uses less digits than its factorization.

402722766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12830 (or 12821 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 402722766 is about 20067.9537073415. The cubic root of 402722766 is about 738.4743133758.

The spelling of 402722766 in words is "four hundred two million, seven hundred twenty-two thousand, seven hundred sixty-six".