20587036 has 12 divisors (see below), whose sum is σ = 36065512. Its totient is φ = 10282608.

The previous prime is 20587033. The next prime is 20587037. The reversal of 20587036 is 63078502.

It is a junction number, because it is equal to n+sod(n) for n = 20586989 and 20587007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20587033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2731 + ... + 6973.

Almost surely, 2^20587036 is an apocalyptic number.

It is an amenable number.

20587036 is a deficient number, since it is larger than the sum of its proper divisors (15478476).

20587036 is a wasteful number, since it uses less digits than its factorization.

20587036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460 (or 5458 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 20587036 is about 4537.2939071654. The cubic root of 20587036 is about 274.0719614921.

The spelling of 20587036 in words is "twenty million, five hundred eighty-seven thousand, thirty-six".