20587874 has 8 divisors (see below), whose sum is σ = 31272960. Its totient is φ = 10163556.

The previous prime is 20587837. The next prime is 20587877. The reversal of 20587874 is 47878502.

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

It is not an unprimeable number, because it can be changed into a prime (20587877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64994 + ... + 65309.

It is an arithmetic number, because the mean of its divisors is an integer number (3909120).

Almost surely, 2^20587874 is an apocalyptic number.

20587874 is a deficient number, since it is larger than the sum of its proper divisors (10685086).

20587874 is a wasteful number, since it uses less digits than its factorization.

20587874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130384.

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 20587874 is about 4537.3862520178. The cubic root of 20587874 is about 274.0756801622.

The spelling of 20587874 in words is "twenty million, five hundred eighty-seven thousand, eight hundred seventy-four".