23228973 has 6 divisors (see below), whose sum is σ = 33552974. Its totient is φ = 15485976.

The previous prime is 23228969. The next prime is 23228977. The reversal of 23228973 is 37982232.

It is an interprime number because it is at equal distance from previous prime (23228969) and next prime (23228977).

It can be written as a sum of positive squares in only one way, i.e., 19554084 + 3674889 = 4422^2 + 1917^2 .

It is not a de Polignac number, because 23228973 - 2² = 23228969 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23228977) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1290490 + ... + 1290507.

Almost surely, 2^23228973 is an apocalyptic number.

It is an amenable number.

23228973 is a deficient number, since it is larger than the sum of its proper divisors (10324001).

23228973 is a wasteful number, since it uses less digits than its factorization.

23228973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2581003 (or 2581000 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 23228973 is about 4819.6444889639. The cubic root of 23228973 is about 285.3273063272.

The spelling of 23228973 in words is "twenty-three million, two hundred twenty-eight thousand, nine hundred seventy-three".