23747320020 has 96 divisors (see below), whose sum is σ = 68742809856. Its totient is φ = 6120576000.

The previous prime is 23747320013. The next prime is 23747320049. The reversal of 23747320020 is 2002374732.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 23747320020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 299800 + ... + 370640.

It is an arithmetic number, because the mean of its divisors is an integer number (716070936).

Almost surely, 2^23747320020 is an apocalyptic number.

23747320020 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 23747320020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34371404928).

23747320020 is an abundant number, since it is smaller than the sum of its proper divisors (44995489836).

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

23747320020 is a wasteful number, since it uses less digits than its factorization.

23747320020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71041 (or 71039 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 30.

Adding to 23747320020 its reverse (2002374732), we get a palindrome (25749694752).

The spelling of 23747320020 in words is "twenty-three billion, seven hundred forty-seven million, three hundred twenty thousand, twenty".