23072149 has 4 divisors (see below), whose sum is σ = 23081760. Its totient is φ = 23062540.

The previous prime is 23072131. The next prime is 23072167. The reversal of 23072149 is 94127032.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (23072131) and next prime (23072167).

It is a cyclic number.

It is not a de Polignac number, because 23072149 - 2⁵ = 23072117 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23072849) 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, 2214 + ... + 7144.

It is an arithmetic number, because the mean of its divisors is an integer number (5770440).

Almost surely, 2^23072149 is an apocalyptic number.

It is an amenable number.

23072149 is a deficient number, since it is larger than the sum of its proper divisors (9611).

23072149 is an equidigital number, since it uses as much as digits as its factorization.

23072149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9610.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 23072149 is about 4803.3476867701. The cubic root of 23072149 is about 284.6837530368.

The spelling of 23072149 in words is "twenty-three million, seventy-two thousand, one hundred forty-nine".