23238721434 has 16 divisors (see below), whose sum is σ = 46513797120. Its totient is φ = 7740181440.

The previous prime is 23238721397. The next prime is 23238721453. The reversal of 23238721434 is 43412783232.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 23238721392 and 23238721401.

It is an unprimeable number.

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, 1506447 + ... + 1521794.

It is an arithmetic number, because the mean of its divisors is an integer number (2907112320).

Almost surely, 2^23238721434 is an apocalyptic number.

23238721434 is an abundant number, since it is smaller than the sum of its proper divisors (23275075686).

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

23238721434 is a wasteful number, since it uses less digits than its factorization.

23238721434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029525.

The product of its digits is 193536, while the sum is 39.

The spelling of 23238721434 in words is "twenty-three billion, two hundred thirty-eight million, seven hundred twenty-one thousand, four hundred thirty-four".