24996139 has 4 divisors (see below), whose sum is σ = 28567024. Its totient is φ = 21425256.

The previous prime is 24996133. The next prime is 24996157. The reversal of 24996139 is 93169942.

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 24996139 - 2³ = 24996131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24996095 and 24996104.

It is not an unprimeable number, because it can be changed into a prime (24996131) 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, 1785432 + ... + 1785445.

It is an arithmetic number, because the mean of its divisors is an integer number (7141756).

Almost surely, 2^24996139 is an apocalyptic number.

24996139 is a deficient number, since it is larger than the sum of its proper divisors (3570885).

24996139 is an equidigital number, since it uses as much as digits as its factorization.

24996139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3570884.

The product of its digits is 104976, while the sum is 43.

The square root of 24996139 is about 4999.6138850915. The cubic root of 24996139 is about 292.3867202030.

It can be divided in two parts, 249961 and 39, that multiplied together give a palindrome (9748479).

The spelling of 24996139 in words is "twenty-four million, nine hundred ninety-six thousand, one hundred thirty-nine".