23449734820 has 24 divisors (see below), whose sum is σ = 49247433144. Its totient is φ = 9379324416.

The previous prime is 23449734797. The next prime is 23449734827. The reversal of 23449734820 is 2843794432.

It can be written as a sum of positive squares in 4 ways, for example, as 1405800036 + 22043934784 = 37494^2 + 148472^2 .

It is not an unprimeable number, because it can be changed into a prime (23449734827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 494802 + ... + 540118.

It is an arithmetic number, because the mean of its divisors is an integer number (2051976381).

Almost surely, 2^23449734820 is an apocalyptic number.

23449734820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23449734820 is an abundant number, since it is smaller than the sum of its proper divisors (25797698324).

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

23449734820 is a wasteful number, since it uses less digits than its factorization.

23449734820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71199 (or 71197 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 46.

The spelling of 23449734820 in words is "twenty-three billion, four hundred forty-nine million, seven hundred thirty-four thousand, eight hundred twenty".