20627487 has 32 divisors (see below), whose sum is σ = 31750400. Its totient is φ = 13226976.

The previous prime is 20627473. The next prime is 20627489. The reversal of 20627487 is 78472602.

20627487 is a `hidden beast` number, since 20 + 627 + 4 + 8 + 7 = 666.

It is not a de Polignac number, because 20627487 - 2⁴ = 20627471 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20627489) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126468 + ... + 126630.

It is an arithmetic number, because the mean of its divisors is an integer number (992200).

Almost surely, 2^20627487 is an apocalyptic number.

20627487 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

20627487 is a deficient number, since it is larger than the sum of its proper divisors (11122913).

20627487 is a wasteful number, since it uses less digits than its factorization.

20627487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 318 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 20627487 is about 4541.7493325810. The cubic root of 20627487 is about 274.2513499777.

The spelling of 20627487 in words is "twenty million, six hundred twenty-seven thousand, four hundred eighty-seven".