23030440020 has 600 divisors, whose sum is σ = 87457886208. Its totient is φ = 5067619200.

The previous prime is 23030440001. The next prime is 23030440067. The reversal of 23030440020 is 2004403032.

23030440020 is a `hidden beast` number, since 230 + 30 + 4 + 400 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23030439975 and 23030440002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 199 ways as a sum of consecutive naturals, for example, 120578125 + ... + 120578315.

Almost surely, 2^23030440020 is an apocalyptic number.

23030440020 is a gapful number since it is divisible by the number (20) 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 23030440020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43728943104).

23030440020 is an abundant number, since it is smaller than the sum of its proper divisors (64427446188).

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

23030440020 is a wasteful number, since it uses less digits than its factorization.

23030440020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

Adding to 23030440020 its reverse (2004403032), we get a palindrome (25034843052).

The spelling of 23030440020 in words is "twenty-three billion, thirty million, four hundred forty thousand, twenty".