23023845 has 40 divisors (see below), whose sum is σ = 44457336. Its totient is φ = 11332224.

The previous prime is 23023841. The next prime is 23023849. The reversal of 23023845 is 54832032.

It is an interprime number because it is at equal distance from previous prime (23023841) and next prime (23023849).

It can be written as a sum of positive squares in 4 ways, for example, as 613089 + 22410756 = 783^2 + 4734^2 .

It is not a de Polignac number, because 23023845 - 2² = 23023841 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23023841) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3079 + ... + 7451.

Almost surely, 2^23023845 is an apocalyptic number.

It is an amenable number.

23023845 is a deficient number, since it is larger than the sum of its proper divisors (21433491).

23023845 is a wasteful number, since it uses less digits than its factorization.

23023845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4403 (or 4394 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 23023845 is about 4798.3168924113. The cubic root of 23023845 is about 284.4849423144.

Adding to 23023845 its reverse (54832032), we get a palindrome (77855877).

The spelling of 23023845 in words is "twenty-three million, twenty-three thousand, eight hundred forty-five".