23128478480 has 40 divisors (see below), whose sum is σ = 53802353304. Its totient is φ = 9246464000.

The previous prime is 23128478473. The next prime is 23128478519. The reversal of 23128478480 is 8487482132.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 43930384 + 23084548096 = 6628^2 + 151936^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×23128478480² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76040 + ... + 228120.

Almost surely, 2^23128478480 is an apocalyptic number.

23128478480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is a pronic number, being equal to 152080×152081.

It is an amenable number.

23128478480 is an abundant number, since it is smaller than the sum of its proper divisors (30673874824).

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

23128478480 is a wasteful number, since it uses less digits than its factorization.

23128478480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153995 (or 153989 counting only the distinct ones).

The product of its (nonzero) digits is 688128, while the sum is 47.

The spelling of 23128478480 in words is "twenty-three billion, one hundred twenty-eight million, four hundred seventy-eight thousand, four hundred eighty".