23740134440 has 128 divisors (see below), whose sum is σ = 62379072000. Its totient is φ = 8039635200.

The previous prime is 23740134413. The next prime is 23740134463. The reversal of 23740134440 is 4443104732.

It is a super-2 number, since 2×23740134440² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23740134397 and 23740134406.

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, 469175 + ... + 517305.

It is an arithmetic number, because the mean of its divisors is an integer number (487336500).

Almost surely, 2^23740134440 is an apocalyptic number.

23740134440 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 23740134440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31189536000).

23740134440 is an abundant number, since it is smaller than the sum of its proper divisors (38638937560).

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

23740134440 is a wasteful number, since it uses less digits than its factorization.

23740134440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48231 (or 48227 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 32.

The spelling of 23740134440 in words is "twenty-three billion, seven hundred forty million, one hundred thirty-four thousand, four hundred forty".