24990987 has 8 divisors (see below), whose sum is σ = 38081536. Its totient is φ = 14280552.

The previous prime is 24990971. The next prime is 24990989. The reversal of 24990987 is 78909942.

It is a happy number.

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

It is not a de Polignac number, because 24990987 - 2⁴ = 24990971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24990989) 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, 595003 + ... + 595044.

It is an arithmetic number, because the mean of its divisors is an integer number (4760192).

Almost surely, 2^24990987 is an apocalyptic number.

24990987 is a deficient number, since it is larger than the sum of its proper divisors (13090549).

24990987 is a wasteful number, since it uses less digits than its factorization.

24990987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190057.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 24990987 is about 4999.0986187512. The cubic root of 24990987 is about 292.3666307018.

The spelling of 24990987 in words is "twenty-four million, nine hundred ninety thousand, nine hundred eighty-seven".