23134820 has 12 divisors (see below), whose sum is σ = 48583164. Its totient is φ = 9253920.

The previous prime is 23134819. The next prime is 23134823. The reversal of 23134820 is 2843132.

It can be written as a sum of positive squares in 2 ways, for example, as 8952064 + 14182756 = 2992^2 + 3766^2 .

It is not an unprimeable number, because it can be changed into a prime (23134823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578351 + ... + 578390.

It is an arithmetic number, because the mean of its divisors is an integer number (4048597).

Almost surely, 2^23134820 is an apocalyptic number.

23134820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23134820 is an abundant number, since it is smaller than the sum of its proper divisors (25448344).

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

23134820 is a wasteful number, since it uses less digits than its factorization.

23134820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156750 (or 1156748 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 23134820 is about 4809.8669420266. The cubic root of 23134820 is about 284.9412826609.

Adding to 23134820 its reverse (2843132), we get a palindrome (25977952).

The spelling of 23134820 in words is "twenty-three million, one hundred thirty-four thousand, eight hundred twenty".