623822220 has 144 divisors (see below), whose sum is σ = 2221197888. Its totient is φ = 138723840.

The previous prime is 623822203. The next prime is 623822233. The reversal of 623822220 is 22228326.

It is a happy number.

623822220 is a `hidden beast` number, since 62 + 382 + 2 + 220 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39930 + ... + 53310.

Almost surely, 2^623822220 is an apocalyptic number.

623822220 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623822220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1110598944).

623822220 is an abundant number, since it is smaller than the sum of its proper divisors (1597375668).

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

623822220 is a wasteful number, since it uses less digits than its factorization.

623822220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13440 (or 13435 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 623822220 is about 24976.4332922057. The cubic root of 623822220 is about 854.4505755053.

The spelling of 623822220 in words is "six hundred twenty-three million, eight hundred twenty-two thousand, two hundred twenty".