24130991 has 4 divisors (see below), whose sum is σ = 24207432. Its totient is φ = 24054552.

The previous prime is 24130963. The next prime is 24131047. The reversal of 24130991 is 19903142.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-24130991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24130901) 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, 37745 + ... + 38378.

It is an arithmetic number, because the mean of its divisors is an integer number (6051858).

Almost surely, 2^24130991 is an apocalyptic number.

24130991 is a deficient number, since it is larger than the sum of its proper divisors (76441).

24130991 is an equidigital number, since it uses as much as digits as its factorization.

24130991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76440.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 24130991 is about 4912.3305059819. The cubic root of 24130991 is about 288.9737447363.

The spelling of 24130991 in words is "twenty-four million, one hundred thirty thousand, nine hundred ninety-one".