24798991 has 24 divisors (see below), whose sum is σ = 30596384. Its totient is φ = 19673280.

The previous prime is 24798967. The next prime is 24799067. The reversal of 24798991 is 19989742.

It is not a de Polignac number, because 24798991 - 2⁵ = 24798959 is a prime.

It is a super-2 number, since 2×24798991² = 1229979909236162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24798901) 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, 136921 + ... + 137101.

Almost surely, 2^24798991 is an apocalyptic number.

24798991 is a deficient number, since it is larger than the sum of its proper divisors (5797393).

24798991 is a wasteful number, since it uses less digits than its factorization.

24798991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 248 counting only the distinct ones).

The product of its digits is 326592, while the sum is 49.

The square root of 24798991 is about 4979.8585321272. The cubic root of 24798991 is about 291.6159922122.

Subtracting from 24798991 its reverse (19989742), we obtain a square (4809249 = 2193²).

The spelling of 24798991 in words is "twenty-four million, seven hundred ninety-eight thousand, nine hundred ninety-one".