23319352428 has 12 divisors (see below), whose sum is σ = 54411822360. Its totient is φ = 7773117472.

The previous prime is 23319352423. The next prime is 23319352451. The reversal of 23319352428 is 82425391332.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×23319352428² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23319352428.

It is not an unprimeable number, because it can be changed into a prime (23319352423) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 971639673 + ... + 971639696.

It is an arithmetic number, because the mean of its divisors is an integer number (4534318530).

Almost surely, 2^23319352428 is an apocalyptic number.

It is an amenable number.

23319352428 is an abundant number, since it is smaller than the sum of its proper divisors (31092469932).

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

23319352428 is a wasteful number, since it uses less digits than its factorization.

23319352428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943279376 (or 1943279374 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 23319352428 in words is "twenty-three billion, three hundred nineteen million, three hundred fifty-two thousand, four hundred twenty-eight".