24140987 has 4 divisors (see below), whose sum is σ = 25998000. Its totient is φ = 22283976.

The previous prime is 24140947. The next prime is 24140999. The reversal of 24140987 is 78904142.

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

It is not a de Polignac number, because 24140987 - 2¹⁸ = 23878843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24140927) 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, 928487 + ... + 928512.

It is an arithmetic number, because the mean of its divisors is an integer number (6499500).

Almost surely, 2^24140987 is an apocalyptic number.

24140987 is a deficient number, since it is larger than the sum of its proper divisors (1857013).

24140987 is a wasteful number, since it uses less digits than its factorization.

24140987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857012.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 24140987 is about 4913.3478403223. The cubic root of 24140987 is about 289.0136406360.

The spelling of 24140987 in words is "twenty-four million, one hundred forty thousand, nine hundred eighty-seven".