23003620 has 24 divisors (see below), whose sum is σ = 48465144. Its totient is φ = 9171456.

The previous prime is 23003597. The next prime is 23003627. The reversal of 23003620 is 2630032.

It can be written as a sum of positive squares in 4 ways, for example, as 4804864 + 18198756 = 2192^2 + 4266^2 .

It is a junction number, because it is equal to n+sod(n) for n = 23003594 and 23003603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23003627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5034 + ... + 8446.

It is an arithmetic number, because the mean of its divisors is an integer number (2019381).

Almost surely, 2^23003620 is an apocalyptic number.

23003620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23003620 is an abundant number, since it is smaller than the sum of its proper divisors (25461524).

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

23003620 is a wasteful number, since it uses less digits than its factorization.

23003620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3759 (or 3757 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 23003620 is about 4796.2089195530. The cubic root of 23003620 is about 284.4016172002.

Adding to 23003620 its reverse (2630032), we get a palindrome (25633652).

The spelling of 23003620 in words is "twenty-three million, three thousand, six hundred twenty".