20275488 has 96 divisors (see below), whose sum is σ = 61125120. Its totient is φ = 6531840.

The previous prime is 20275487. The next prime is 20275499. The reversal of 20275488 is 88457202.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a super-2 number, since 2×20275488² = 822190827276288, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (20275483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26406 + ... + 27162.

It is an arithmetic number, because the mean of its divisors is an integer number (636720).

Almost surely, 2^20275488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20275488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30562560).

20275488 is an abundant number, since it is smaller than the sum of its proper divisors (40849632).

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

20275488 is a wasteful number, since it uses less digits than its factorization.

20275488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 793 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 36.

The square root of 20275488 is about 4502.8311094244. The cubic root of 20275488 is about 272.6823984350.

The spelling of 20275488 in words is "twenty million, two hundred seventy-five thousand, four hundred eighty-eight".