20087485 has 16 divisors (see below), whose sum is σ = 27009792. Its totient is φ = 14212800.

The previous prime is 20087479. The next prime is 20087497. The reversal of 20087485 is 58478002.

It is not a de Polignac number, because 20087485 - 2⁷ = 20087357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20087485.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2901 + ... + 6970.

It is an arithmetic number, because the mean of its divisors is an integer number (1688112).

Almost surely, 2^20087485 is an apocalyptic number.

It is an amenable number.

20087485 is a deficient number, since it is larger than the sum of its proper divisors (6922307).

20087485 is a wasteful number, since it uses less digits than its factorization.

20087485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9924.

The product of its (nonzero) digits is 17920, while the sum is 34.

The square root of 20087485 is about 4481.9064024140. The cubic root of 20087485 is about 271.8369706794.

The spelling of 20087485 in words is "twenty million, eighty-seven thousand, four hundred eighty-five".