20087064 has 48 divisors (see below), whose sum is σ = 57606120. Its totient is φ = 6301440.

The previous prime is 20087059. The next prime is 20087083. The reversal of 20087064 is 46078002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6982 + ... + 9429.

Almost surely, 2^20087064 is an apocalyptic number.

20087064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20087064 is an abundant number, since it is smaller than the sum of its proper divisors (37519056).

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

20087064 is a wasteful number, since it uses less digits than its factorization.

20087064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16440 (or 16433 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20087064 is about 4481.8594355468. The cubic root of 20087064 is about 271.8350715838.

The spelling of 20087064 in words is "twenty million, eighty-seven thousand, sixty-four".