23236206420 has 48 divisors (see below), whose sum is σ = 74355861888. Its totient is φ = 5311132800.

The previous prime is 23236206379. The next prime is 23236206449. The reversal of 23236206420 is 2460263232.

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

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, 27661731 + ... + 27662570.

It is an arithmetic number, because the mean of its divisors is an integer number (1549080456).

Almost surely, 2^23236206420 is an apocalyptic number.

23236206420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23236206420 is an abundant number, since it is smaller than the sum of its proper divisors (51119655468).

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

23236206420 is a wasteful number, since it uses less digits than its factorization.

23236206420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55324320 (or 55324318 counting only the distinct ones).

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

Adding to 23236206420 its reverse (2460263232), we get a palindrome (25696469652).

The spelling of 23236206420 in words is "twenty-three billion, two hundred thirty-six million, two hundred six thousand, four hundred twenty".