22473491 has 4 divisors (see below), whose sum is σ = 22566984. Its totient is φ = 22380000.

The previous prime is 22473427. The next prime is 22473547. The reversal of 22473491 is 19437422.

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 22473491 - 2⁶ = 22473427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22473421) 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, 46385 + ... + 46866.

It is an arithmetic number, because the mean of its divisors is an integer number (5641746).

Almost surely, 2^22473491 is an apocalyptic number.

22473491 is a deficient number, since it is larger than the sum of its proper divisors (93493).

22473491 is an equidigital number, since it uses as much as digits as its factorization.

22473491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93492.

The product of its digits is 12096, while the sum is 32.

The square root of 22473491 is about 4740.6213727738. The cubic root of 22473491 is about 282.1998943202.

The spelling of 22473491 in words is "twenty-two million, four hundred seventy-three thousand, four hundred ninety-one".