402606220 has 24 divisors (see below), whose sum is σ = 846039600. Its totient is φ = 160934592.

The previous prime is 402606209. The next prime is 402606227. The reversal of 402606220 is 22606204.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 402606191 and 402606200.

It is not an unprimeable number, because it can be changed into a prime (402606227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28291 + ... + 40069.

It is an arithmetic number, because the mean of its divisors is an integer number (35251650).

Almost surely, 2^402606220 is an apocalyptic number.

It is an amenable number.

402606220 is an abundant number, since it is smaller than the sum of its proper divisors (443433380).

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

402606220 is a wasteful number, since it uses less digits than its factorization.

402606220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13497 (or 13495 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 402606220 is about 20065.0497133698. The cubic root of 402606220 is about 738.4030695505.

The spelling of 402606220 in words is "four hundred two million, six hundred six thousand, two hundred twenty".