20044655 has 8 divisors (see below), whose sum is σ = 24883200. Its totient is φ = 15482656.

The previous prime is 20044637. The next prime is 20044657. The reversal of 20044655 is 55644002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20044655 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20044657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68975 + ... + 69264.

It is an arithmetic number, because the mean of its divisors is an integer number (3110400).

Almost surely, 2^20044655 is an apocalyptic number.

20044655 is a deficient number, since it is larger than the sum of its proper divisors (4838545).

20044655 is a wasteful number, since it uses less digits than its factorization.

20044655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138273.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 20044655 is about 4477.1257520869. The cubic root of 20044655 is about 271.6436320230.

Adding to 20044655 its reverse (55644002), we get a palindrome (75688657).

The spelling of 20044655 in words is "twenty million, forty-four thousand, six hundred fifty-five".