23255322420 has 96 divisors (see below), whose sum is σ = 71150446080. Its totient is φ = 5628447360.

The previous prime is 23255322407. The next prime is 23255322443. The reversal of 23255322420 is 2422355232.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 380079 + ... + 437001.

It is an arithmetic number, because the mean of its divisors is an integer number (741150480).

Almost surely, 2^23255322420 is an apocalyptic number.

23255322420 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 23255322420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35575223040).

23255322420 is an abundant number, since it is smaller than the sum of its proper divisors (47895123660).

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

23255322420 is a wasteful number, since it uses less digits than its factorization.

23255322420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57565 (or 57563 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 30.

Adding to 23255322420 its reverse (2422355232), we get a palindrome (25677677652).

The spelling of 23255322420 in words is "twenty-three billion, two hundred fifty-five million, three hundred twenty-two thousand, four hundred twenty".