23998401 has 24 divisors (see below), whose sum is σ = 39871104. Its totient is φ = 13625280.

The previous prime is 23998369. The next prime is 23998409. The reversal of 23998401 is 10489932.

It is not a de Polignac number, because 23998401 - 2⁵ = 23998369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23998409) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9381 + ... + 11661.

It is an arithmetic number, because the mean of its divisors is an integer number (1661296).

Almost surely, 2^23998401 is an apocalyptic number.

23998401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23998401 is a deficient number, since it is larger than the sum of its proper divisors (15872703).

23998401 is a wasteful number, since it uses less digits than its factorization.

23998401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2461 (or 2458 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 23998401 is about 4898.8162855939. The cubic root of 23998401 is about 288.4435079274.

The spelling of 23998401 in words is "twenty-three million, nine hundred ninety-eight thousand, four hundred one".