23020420 has 12 divisors (see below), whose sum is σ = 48342924. Its totient is φ = 9208160.

The previous prime is 23020411. The next prime is 23020421. The reversal of 23020420 is 2402032.

It can be written as a sum of positive squares in 2 ways, for example, as 5447556 + 17572864 = 2334^2 + 4192^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23020420.

It is not an unprimeable number, because it can be changed into a prime (23020421) 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, 575491 + ... + 575530.

It is an arithmetic number, because the mean of its divisors is an integer number (4028577).

Almost surely, 2^23020420 is an apocalyptic number.

23020420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23020420 is an abundant number, since it is smaller than the sum of its proper divisors (25322504).

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

23020420 is a wasteful number, since it uses less digits than its factorization.

23020420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151030 (or 1151028 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 23020420 is about 4797.9599831595. The cubic root of 23020420 is about 284.4708350668.

Adding to 23020420 its reverse (2402032), we get a palindrome (25422452).

The spelling of 23020420 in words is "twenty-three million, twenty thousand, four hundred twenty".