20587132 has 6 divisors (see below), whose sum is σ = 36027488. Its totient is φ = 10293564.

The previous prime is 20587123. The next prime is 20587141. The reversal of 20587132 is 23178502.

It is an interprime number because it is at equal distance from previous prime (20587123) and next prime (20587141).

It is a self number, because there is not a number n which added to its sum of digits gives 20587132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2573388 + ... + 2573395.

Almost surely, 2^20587132 is an apocalyptic number.

It is an amenable number.

20587132 is a deficient number, since it is larger than the sum of its proper divisors (15440356).

20587132 is a wasteful number, since it uses less digits than its factorization.

20587132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146787 (or 5146785 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 20587132 is about 4537.3044861459. The cubic root of 20587132 is about 274.0723875024.

The spelling of 20587132 in words is "twenty million, five hundred eighty-seven thousand, one hundred thirty-two".