23480257 has 4 divisors (see below), whose sum is σ = 24716080. Its totient is φ = 22244436.

The previous prime is 23480243. The next prime is 23480269. The reversal of 23480257 is 75208432.

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.

It is a cyclic number.

It is not a de Polignac number, because 23480257 - 2⁷ = 23480129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23480207) 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, 617883 + ... + 617920.

It is an arithmetic number, because the mean of its divisors is an integer number (6179020).

Almost surely, 2^23480257 is an apocalyptic number.

It is an amenable number.

23480257 is a deficient number, since it is larger than the sum of its proper divisors (1235823).

23480257 is a wasteful number, since it uses less digits than its factorization.

23480257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235822.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 23480257 is about 4845.6430945748. The cubic root of 23480257 is about 286.3524799764.

Adding to 23480257 its reverse (75208432), we get a palindrome (98688689).

The spelling of 23480257 in words is "twenty-three million, four hundred eighty thousand, two hundred fifty-seven".