402066222 has 16 divisors (see below), whose sum is σ = 813168720. Its totient is φ = 132516032.

The previous prime is 402066209. The next prime is 402066227. The reversal of 402066222 is 222660204.

It is a junction number, because it is equal to n+sod(n) for n = 402066192 and 402066201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402066227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375933 + ... + 377000.

It is an arithmetic number, because the mean of its divisors is an integer number (50823045).

Almost surely, 2^402066222 is an apocalyptic number.

402066222 is an abundant number, since it is smaller than the sum of its proper divisors (411102498).

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

402066222 is a wasteful number, since it uses less digits than its factorization.

402066222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753027.

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 402066222 is about 20051.5890143400. The cubic root of 402066222 is about 738.0727926671.

The spelling of 402066222 in words is "four hundred two million, sixty-six thousand, two hundred twenty-two".