223402640220 has 96 divisors (see below), whose sum is σ = 704551525440. Its totient is φ = 58757944320.

The previous prime is 223402640173. The next prime is 223402640231. The reversal of 223402640220 is 22046204322.

It is a happy number.

223402640220 is a `hidden beast` number, since 2 + 234 + 0 + 2 + 6 + 402 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2794201 + ... + 2873040.

It is an arithmetic number, because the mean of its divisors is an integer number (7339078390).

Almost surely, 2^223402640220 is an apocalyptic number.

223402640220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

223402640220 is an abundant number, since it is smaller than the sum of its proper divisors (481148885220).

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

223402640220 is a wasteful number, since it uses less digits than its factorization.

223402640220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5667332 (or 5667324 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 223402640220 its reverse (22046204322), we get a palindrome (245448844542).

The spelling of 223402640220 in words is "two hundred twenty-three billion, four hundred two million, six hundred forty thousand, two hundred twenty".