23044432440 has 32 divisors (see below), whose sum is σ = 69133297680. Its totient is φ = 6145181952.

The previous prime is 23044432421. The next prime is 23044432457. The reversal of 23044432440 is 4423444032.

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

It is a junction number, because it is equal to n+sod(n) for n = 23044432398 and 23044432407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96018349 + ... + 96018588.

Almost surely, 2^23044432440 is an apocalyptic number.

23044432440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23044432440 is an abundant number, since it is smaller than the sum of its proper divisors (46088865240).

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

23044432440 is a wasteful number, since it uses less digits than its factorization.

23044432440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192036951 (or 192036947 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 30.

Adding to 23044432440 its reverse (4423444032), we get a palindrome (27467876472).

The spelling of 23044432440 in words is "twenty-three billion, forty-four million, four hundred thirty-two thousand, four hundred forty".