23801491 has 4 divisors (see below), whose sum is σ = 27201712. Its totient is φ = 20401272.

The previous prime is 23801483. The next prime is 23801501. The reversal of 23801491 is 19410832.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23801491 - 2³ = 23801483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23801191) 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, 1700100 + ... + 1700113.

It is an arithmetic number, because the mean of its divisors is an integer number (6800428).

Almost surely, 2^23801491 is an apocalyptic number.

23801491 is a deficient number, since it is larger than the sum of its proper divisors (3400221).

23801491 is an equidigital number, since it uses as much as digits as its factorization.

23801491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3400220.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 23801491 is about 4878.6771772684. The cubic root of 23801491 is about 287.6524348535.

The spelling of 23801491 in words is "twenty-three million, eight hundred one thousand, four hundred ninety-one".