20632888 has 8 divisors (see below), whose sum is σ = 38686680. Its totient is φ = 10316440.

The previous prime is 20632877. The next prime is 20632889. The reversal of 20632888 is 88823602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20632889) 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 as a sum of consecutive naturals, namely, 1289548 + ... + 1289563.

It is an arithmetic number, because the mean of its divisors is an integer number (4835835).

Almost surely, 2^20632888 is an apocalyptic number.

It is an amenable number.

20632888 is a deficient number, since it is larger than the sum of its proper divisors (18053792).

20632888 is a wasteful number, since it uses less digits than its factorization.

20632888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579117 (or 2579113 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 20632888 is about 4542.3438883466. The cubic root of 20632888 is about 274.2752840983.

The spelling of 20632888 in words is "twenty million, six hundred thirty-two thousand, eight hundred eighty-eight".