23021396 has 6 divisors (see below), whose sum is σ = 40287450. Its totient is φ = 11510696.

The previous prime is 23021393. The next prime is 23021423. The reversal of 23021396 is 69312032.

It can be written as a sum of positive squares in only one way, i.e., 22905796 + 115600 = 4786^2 + 340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23021393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2877671 + ... + 2877678.

It is an arithmetic number, because the mean of its divisors is an integer number (6714575).

Almost surely, 2^23021396 is an apocalyptic number.

It is an amenable number.

23021396 is a deficient number, since it is larger than the sum of its proper divisors (17266054).

23021396 is a wasteful number, since it uses less digits than its factorization.

23021396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5755353 (or 5755351 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 23021396 is about 4798.0616919752. The cubic root of 23021396 is about 284.4748552600.

The spelling of 23021396 in words is "twenty-three million, twenty-one thousand, three hundred ninety-six".