23920147440 has 120 divisors (see below), whose sum is σ = 91807823328. Its totient is φ = 5467461120.

The previous prime is 23920147421. The next prime is 23920147487. The reversal of 23920147440 is 4474102932.

23920147440 is a `hidden beast` number, since 2 + 3 + 9 + 201 + 4 + 7 + 440 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 23920147395 and 23920147404.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2367991 + ... + 2378070.

Almost surely, 2^23920147440 is an apocalyptic number.

23920147440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23920147440 is an abundant number, since it is smaller than the sum of its proper divisors (67887675888).

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

23920147440 is a wasteful number, since it uses less digits than its factorization.

23920147440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4746087 (or 4746078 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The spelling of 23920147440 in words is "twenty-three billion, nine hundred twenty million, one hundred forty-seven thousand, four hundred forty".