24990247 has 4 divisors (see below), whose sum is σ = 25796416. Its totient is φ = 24184080.

The previous prime is 24990241. The next prime is 24990253. The reversal of 24990247 is 74209942.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74209942 = 2 ⋅37104971.

It is an interprime number because it is at equal distance from previous prime (24990241) and next prime (24990253).

It is a cyclic number.

It is not a de Polignac number, because 24990247 - 2³ = 24990239 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 (24990241) 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, 403038 + ... + 403099.

It is an arithmetic number, because the mean of its divisors is an integer number (6449104).

Almost surely, 2^24990247 is an apocalyptic number.

24990247 is a deficient number, since it is larger than the sum of its proper divisors (806169).

24990247 is an equidigital number, since it uses as much as digits as its factorization.

24990247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 806168.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 24990247 is about 4999.0246048604. The cubic root of 24990247 is about 292.3637449489.

The spelling of 24990247 in words is "twenty-four million, nine hundred ninety thousand, two hundred forty-seven".