23400432784 has 45 divisors (see below), whose sum is σ = 45811497657. Its totient is φ = 11579368512.

The previous prime is 23400432749. The next prime is 23400432787. The reversal of 23400432784 is 48723400432.

The square root of 23400432784 is 152972.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 21794026384 + 1606406400 = 147628^2 + 40080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23400432787) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 102185182 + ... + 102185410.

Almost surely, 2^23400432784 is an apocalyptic number.

23400432784 is the 152972-nd square number.

It is an amenable number.

23400432784 is a deficient number, since it is larger than the sum of its proper divisors (22411064873).

23400432784 is an frugal number, since it uses more digits than its factorization.

23400432784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800 (or 398 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 37.

The spelling of 23400432784 in words is "twenty-three billion, four hundred million, four hundred thirty-two thousand, seven hundred eighty-four".