23226230640 has 80 divisors (see below), whose sum is σ = 73533293568. Its totient is φ = 6061878528.

The previous prime is 23226230623. The next prime is 23226230689. The reversal of 23226230640 is 4603262232.

It is a tau number, because it is divible by the number of its divisors (80).

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 = 23226230598 and 23226230607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1018252 + ... + 1040811.

Almost surely, 2^23226230640 is an apocalyptic number.

23226230640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23226230640 is an abundant number, since it is smaller than the sum of its proper divisors (50307062928).

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

23226230640 is a wasteful number, since it uses less digits than its factorization.

23226230640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059126 (or 2059120 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 23226230640 its reverse (4603262232), we get a palindrome (27829492872).

The spelling of 23226230640 in words is "twenty-three billion, two hundred twenty-six million, two hundred thirty thousand, six hundred forty".