20727288 has 48 divisors (see below), whose sum is σ = 56347200. Its totient is φ = 6883200.

The previous prime is 20727283. The next prime is 20727323. The reversal of 20727288 is 88272702.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727281) 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 11 ways as a sum of consecutive naturals, for example, 34188 + ... + 34788.

It is an arithmetic number, because the mean of its divisors is an integer number (1173900).

Almost surely, 2^20727288 is an apocalyptic number.

It is an amenable number.

20727288 is an abundant number, since it is smaller than the sum of its proper divisors (35619912).

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

20727288 is a wasteful number, since it uses less digits than its factorization.

20727288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1092 (or 1085 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 20727288 is about 4552.7231411541. The cubic root of 20727288 is about 274.6929377056.

It can be divided in two parts, 207 and 27288, that added together give a triangular number (27495 = T₂₃₄).

The spelling of 20727288 in words is "twenty million, seven hundred twenty-seven thousand, two hundred eighty-eight".