23886156420 has 720 divisors, whose sum is σ = 92494846080. Its totient is φ = 5163637248.

The previous prime is 23886156409. The next prime is 23886156457. The reversal of 23886156420 is 2465168832.

23886156420 is a `hidden beast` number, since 2 + 3 + 8 + 8 + 61 + 564 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 268383736 + ... + 268383824.

It is an arithmetic number, because the mean of its divisors is an integer number (128465064).

Almost surely, 2^23886156420 is an apocalyptic number.

23886156420 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 23886156420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46247423040).

23886156420 is an abundant number, since it is smaller than the sum of its proper divisors (68608689660).

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

23886156420 is an equidigital number, since it uses as much as digits as its factorization.

23886156420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 23886156420 in words is "twenty-three billion, eight hundred eighty-six million, one hundred fifty-six thousand, four hundred twenty".