24981987 has 8 divisors (see below), whose sum is σ = 33765904. Its totient is φ = 16426368.

The previous prime is 24981973. The next prime is 24981991. The reversal of 24981987 is 78918942.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24981987 - 2⁶ = 24981923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24981917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56818 + ... + 57255.

It is an arithmetic number, because the mean of its divisors is an integer number (4220738).

Almost surely, 2^24981987 is an apocalyptic number.

24981987 is a deficient number, since it is larger than the sum of its proper divisors (8783917).

24981987 is a wasteful number, since it uses less digits than its factorization.

24981987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114149.

The product of its digits is 290304, while the sum is 48.

The square root of 24981987 is about 4998.1983754149. The cubic root of 24981987 is about 292.3315298392.

The spelling of 24981987 in words is "twenty-four million, nine hundred eighty-one thousand, nine hundred eighty-seven".