23403413440 has 84 divisors (see below), whose sum is σ = 61256360088. Its totient is φ = 8510318080.

The previous prime is 23403413431. The next prime is 23403413479. The reversal of 23403413440 is 4431430432.

It is a junction number, because it is equal to n+sod(n) for n = 23403413399 and 23403413408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 263494 + ... + 340933.

It is an arithmetic number, because the mean of its divisors is an integer number (729242382).

Almost surely, 2^23403413440 is an apocalyptic number.

23403413440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23403413440 is an abundant number, since it is smaller than the sum of its proper divisors (37852946648).

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

23403413440 is a wasteful number, since it uses less digits than its factorization.

23403413440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604466 (or 604445 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 23403413440 its reverse (4431430432), we get a palindrome (27834843872).

The spelling of 23403413440 in words is "twenty-three billion, four hundred three million, four hundred thirteen thousand, four hundred forty".