23020220 has 24 divisors (see below), whose sum is σ = 48511008. Its totient is φ = 9176000.

The previous prime is 23020201. The next prime is 23020273. The reversal of 23020220 is 2202032.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4370 + ... + 8070.

It is an arithmetic number, because the mean of its divisors is an integer number (2021292).

Almost surely, 2^23020220 is an apocalyptic number.

23020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020220 is an abundant number, since it is smaller than the sum of its proper divisors (25490788).

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

23020220 is a wasteful number, since it uses less digits than its factorization.

23020220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4021 (or 4019 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 23020220 is about 4797.9391409229. The cubic root of 23020220 is about 284.4700112427.

Adding to 23020220 its reverse (2202032), we get a palindrome (25222252).

The spelling of 23020220 in words is "twenty-three million, twenty thousand, two hundred twenty".