23016457 has 4 divisors (see below), whose sum is σ = 23577876. Its totient is φ = 22455040.

The previous prime is 23016437. The next prime is 23016463. The reversal of 23016457 is 75461032.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 20647936 = 1539^2 + 4544^2 .

It is a cyclic number.

It is not a de Polignac number, because 23016457 - 2²³ = 14627849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23016407) 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, 280648 + ... + 280729.

It is an arithmetic number, because the mean of its divisors is an integer number (5894469).

Almost surely, 2^23016457 is an apocalyptic number.

It is an amenable number.

23016457 is a deficient number, since it is larger than the sum of its proper divisors (561419).

23016457 is an equidigital number, since it uses as much as digits as its factorization.

23016457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561418.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 23016457 is about 4797.5469773625. The cubic root of 23016457 is about 284.4545101023.

Adding to 23016457 its reverse (75461032), we get a palindrome (98477489).

The spelling of 23016457 in words is "twenty-three million, sixteen thousand, four hundred fifty-seven".