23297780 has 24 divisors (see below), whose sum is σ = 53373600. Its totient is φ = 8471840.

The previous prime is 23297779. The next prime is 23297783. The reversal of 23297780 is 8779232.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23297783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52730 + ... + 53169.

It is an arithmetic number, because the mean of its divisors is an integer number (2223900).

Almost surely, 2^23297780 is an apocalyptic number.

23297780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23297780 is an abundant number, since it is smaller than the sum of its proper divisors (30075820).

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

23297780 is a wasteful number, since it uses less digits than its factorization.

23297780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105919 (or 105917 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 23297780 is about 4826.7773928368. Note that the first 3 decimals coincide. The cubic root of 23297780 is about 285.6087531677.

The spelling of 23297780 in words is "twenty-three million, two hundred ninety-seven thousand, seven hundred eighty".