20616888 has 16 divisors (see below), whose sum is σ = 51542280. Its totient is φ = 6872288.

The previous prime is 20616887. The next prime is 20616899. The reversal of 20616888 is 88861602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20616887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 429495 + ... + 429542.

Almost surely, 2^20616888 is an apocalyptic number.

It is an amenable number.

20616888 is an abundant number, since it is smaller than the sum of its proper divisors (30925392).

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

20616888 is a wasteful number, since it uses less digits than its factorization.

20616888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 859046 (or 859042 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 20616888 is about 4540.5823415064. The cubic root of 20616888 is about 274.2043691690.

The spelling of 20616888 in words is "twenty million, six hundred sixteen thousand, eight hundred eighty-eight".