23898457 has 4 divisors (see below), whose sum is σ = 26071056. Its totient is φ = 21725860.

The previous prime is 23898437. The next prime is 23898467. The reversal of 23898457 is 75489832.

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 23898457 - 2¹¹ = 23896409 is a prime.

It is a super-2 number, since 2×23898457² = 1142272493961698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23898437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1086283 + ... + 1086304.

It is an arithmetic number, because the mean of its divisors is an integer number (6517764).

Almost surely, 2^23898457 is an apocalyptic number.

It is an amenable number.

23898457 is a deficient number, since it is larger than the sum of its proper divisors (2172599).

23898457 is a wasteful number, since it uses less digits than its factorization.

23898457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2172598.

The product of its digits is 483840, while the sum is 46.

The square root of 23898457 is about 4888.6048111910. The cubic root of 23898457 is about 288.0425324594.

The spelling of 23898457 in words is "twenty-three million, eight hundred ninety-eight thousand, four hundred fifty-seven".