20032655 has 8 divisors (see below), whose sum is σ = 25084512. Its totient is φ = 15329248.

The previous prime is 20032637. The next prime is 20032667. The reversal of 20032655 is 55623002.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20032655 - 2⁸ = 20032399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20032655.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 86984 + ... + 87213.

It is an arithmetic number, because the mean of its divisors is an integer number (3135564).

Almost surely, 2^20032655 is an apocalyptic number.

20032655 is a deficient number, since it is larger than the sum of its proper divisors (5051857).

20032655 is a wasteful number, since it uses less digits than its factorization.

20032655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174225.

The product of its (nonzero) digits is 1800, while the sum is 23.

The square root of 20032655 is about 4475.7854059372. The cubic root of 20032655 is about 271.5894135079.

Adding to 20032655 its reverse (55623002), we get a palindrome (75655657).

The spelling of 20032655 in words is "twenty million, thirty-two thousand, six hundred fifty-five".