20087000 has 64 divisors (see below), whose sum is σ = 48016800. Its totient is φ = 7862400.

The previous prime is 20086991. The next prime is 20087021. The reversal of 20087000 is 78002.

It is a self number, because there is not a number n which added to its sum of digits gives 20087000.

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, 52811 + ... + 53189.

Almost surely, 2^20087000 is an apocalyptic number.

20087000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20087000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24008400).

20087000 is an abundant number, since it is smaller than the sum of its proper divisors (27929800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20087000 is a wasteful number, since it uses less digits than its factorization.

20087000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 17.

The square root of 20087000 is about 4481.8522956474. The cubic root of 20087000 is about 271.8347828828.

The spelling of 20087000 in words is "twenty million, eighty-seven thousand".