23340220 has 12 divisors (see below), whose sum is σ = 49014504. Its totient is φ = 9336080.

The previous prime is 23340211. The next prime is 23340259. The reversal of 23340220 is 2204332.

It is a junction number, because it is equal to n+sod(n) for n = 23340194 and 23340203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 583486 + ... + 583525.

It is an arithmetic number, because the mean of its divisors is an integer number (4084542).

Almost surely, 2^23340220 is an apocalyptic number.

23340220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23340220 is an abundant number, since it is smaller than the sum of its proper divisors (25674284).

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

23340220 is a wasteful number, since it uses less digits than its factorization.

23340220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1167020 (or 1167018 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 23340220 is about 4831.1717005298. The cubic root of 23340220 is about 285.7820727255.

Adding to 23340220 its reverse (2204332), we get a palindrome (25544552).

It can be divided in two parts, 233402 and 20, that multiplied together give a triangular number (4668040 = T₃₀₅₅).

The spelling of 23340220 in words is "twenty-three million, three hundred forty thousand, two hundred twenty".