23203453728 has 144 divisors (see below), whose sum is σ = 76303866240. Its totient is φ = 6119576064.

The previous prime is 23203453723. The next prime is 23203453747. The reversal of 23203453728 is 82735430232.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (23203453723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128568 + ... + 250871.

It is an arithmetic number, because the mean of its divisors is an integer number (529887960).

Almost surely, 2^23203453728 is an apocalyptic number.

23203453728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23203453728 is an abundant number, since it is smaller than the sum of its proper divisors (53100412512).

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

23203453728 is a wasteful number, since it uses less digits than its factorization.

23203453728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379479 (or 379464 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 39.

The spelling of 23203453728 in words is "twenty-three billion, two hundred three million, four hundred fifty-three thousand, seven hundred twenty-eight".