23433220 has 12 divisors (see below), whose sum is σ = 49209804. Its totient is φ = 9373280.

The previous prime is 23433197. The next prime is 23433227. The reversal of 23433220 is 2233432.

It can be written as a sum of positive squares in 2 ways, for example, as 15492096 + 7941124 = 3936^2 + 2818^2 .

It is not an unprimeable number, because it can be changed into a prime (23433227) 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, 585811 + ... + 585850.

It is an arithmetic number, because the mean of its divisors is an integer number (4100817).

Almost surely, 2^23433220 is an apocalyptic number.

23433220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23433220 is an abundant number, since it is smaller than the sum of its proper divisors (25776584).

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

23433220 is a wasteful number, since it uses less digits than its factorization.

23433220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1171670 (or 1171668 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 19.

The square root of 23433220 is about 4840.7871260777. The cubic root of 23433220 is about 286.1611395709.

Adding to 23433220 its reverse (2233432), we get a palindrome (25666652).

It can be divided in two parts, 23433 and 220, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 23433220 in words is "twenty-three million, four hundred thirty-three thousand, two hundred twenty".