402724022 has 4 divisors (see below), whose sum is σ = 604086036. Its totient is φ = 201362010.

The previous prime is 402724009. The next prime is 402724039. The reversal of 402724022 is 220427204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100681004 + ... + 100681007.

It is an arithmetic number, because the mean of its divisors is an integer number (151021509).

Almost surely, 2^402724022 is an apocalyptic number.

402724022 is a deficient number, since it is larger than the sum of its proper divisors (201362014).

402724022 is a wasteful number, since it uses less digits than its factorization.

402724022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201362013.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 402724022 is about 20067.9850009910. The cubic root of 402724022 is about 738.4750810857.

The spelling of 402724022 in words is "four hundred two million, seven hundred twenty-four thousand, twenty-two".