402221822 has 8 divisors (see below), whose sum is σ = 624137400. Its totient is φ = 194176024.

The previous prime is 402221803. The next prime is 402221839. The reversal of 402221822 is 228122204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3467372 + ... + 3467487.

It is an arithmetic number, because the mean of its divisors is an integer number (78017175).

Almost surely, 2^402221822 is an apocalyptic number.

402221822 is a deficient number, since it is larger than the sum of its proper divisors (221915578).

402221822 is a wasteful number, since it uses less digits than its factorization.

402221822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6934890.

The product of its (nonzero) digits is 1024, while the sum is 23.

The square root of 402221822 is about 20055.4686307750. The cubic root of 402221822 is about 738.1679920053.

The spelling of 402221822 in words is "four hundred two million, two hundred twenty-one thousand, eight hundred twenty-two".