23220400380 has 96 divisors (see below), whose sum is σ = 66783515904. Its totient is φ = 6026110464.

The previous prime is 23220400349. The next prime is 23220400381. The reversal of 23220400380 is 8300402232.

It is a self number, because there is not a number n which added to its sum of digits gives 23220400380.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23220400381) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 298864 + ... + 368456.

It is an arithmetic number, because the mean of its divisors is an integer number (695661624).

Almost surely, 2^23220400380 is an apocalyptic number.

23220400380 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 23220400380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33391757952).

23220400380 is an abundant number, since it is smaller than the sum of its proper divisors (43563115524).

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

23220400380 is a wasteful number, since it uses less digits than its factorization.

23220400380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69755 (or 69753 counting only the distinct ones).

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

The spelling of 23220400380 in words is "twenty-three billion, two hundred twenty million, four hundred thousand, three hundred eighty".