22923487 has 4 divisors (see below), whose sum is σ = 22943776. Its totient is φ = 22903200.

The previous prime is 22923449. The next prime is 22923491. The reversal of 22923487 is 78432922.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22923487 - 2¹¹ = 22921439 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 (22923437) 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, 8343 + ... + 10744.

It is an arithmetic number, because the mean of its divisors is an integer number (5735944).

Almost surely, 2^22923487 is an apocalyptic number.

22923487 is a deficient number, since it is larger than the sum of its proper divisors (20289).

22923487 is a wasteful number, since it uses less digits than its factorization.

22923487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20288.

The product of its digits is 48384, while the sum is 37.

The square root of 22923487 is about 4787.8478463711. The cubic root of 22923487 is about 284.0709957731.

It can be divided in two parts, 229 and 23487, that added together give a square (23716 = 154²).

The spelling of 22923487 in words is "twenty-two million, nine hundred twenty-three thousand, four hundred eighty-seven".