20087604 has 72 divisors (see below), whose sum is σ = 53464320. Its totient is φ = 6350400.

The previous prime is 20087603. The next prime is 20087647. The reversal of 20087604 is 40678002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20087603) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73989 + ... + 74259.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^20087604 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20087604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26732160).

20087604 is an abundant number, since it is smaller than the sum of its proper divisors (33376716).

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

20087604 is a wasteful number, since it uses less digits than its factorization.

20087604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 376 counting only the distinct ones).

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

The square root of 20087604 is about 4481.9196779951. The cubic root of 20087604 is about 271.8375074736.

The spelling of 20087604 in words is "twenty million, eighty-seven thousand, six hundred four".