402320022 has 32 divisors (see below), whose sum is σ = 912145920. Its totient is φ = 117275040.

The previous prime is 402319991. The next prime is 402320053. The reversal of 402320022 is 220023204.

It is an interprime number because it is at equal distance from previous prime (402319991) and next prime (402320053).

It is a super-2 number, since 2×402320022² = 323722800204160968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 402319983 and 402320010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134254 + ... + 137217.

It is an arithmetic number, because the mean of its divisors is an integer number (28504560).

Almost surely, 2^402320022 is an apocalyptic number.

402320022 is an abundant number, since it is smaller than the sum of its proper divisors (509825898).

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

402320022 is a wasteful number, since it uses less digits than its factorization.

402320022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271508.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 402320022 is about 20057.9166914214. The cubic root of 402320022 is about 738.2280601854.

Adding to 402320022 its reverse (220023204), we get a palindrome (622343226).

The spelling of 402320022 in words is "four hundred two million, three hundred twenty thousand, twenty-two".