23018457 has 32 divisors (see below), whose sum is σ = 38513664. Its totient is φ = 11880000.

The previous prime is 23018449. The next prime is 23018491. The reversal of 23018457 is 75481032.

It is not a de Polignac number, because 23018457 - 2³ = 23018449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23018407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57783 + ... + 58179.

It is an arithmetic number, because the mean of its divisors is an integer number (1203552).

Almost surely, 2^23018457 is an apocalyptic number.

It is an amenable number.

23018457 is a deficient number, since it is larger than the sum of its proper divisors (15495207).

23018457 is a wasteful number, since it uses less digits than its factorization.

23018457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 23018457 is about 4797.7554126904. The cubic root of 23018457 is about 284.4627490266.

Adding to 23018457 its reverse (75481032), we get a palindrome (98499489).

The spelling of 23018457 in words is "twenty-three million, eighteen thousand, four hundred fifty-seven".