20946288 has 40 divisors (see below), whose sum is σ = 59031936. Its totient is φ = 6347200.

The previous prime is 20946287. The next prime is 20946293. The reversal of 20946288 is 88264902.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20946287) 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, 19308 + ... + 20363.

Almost surely, 2^20946288 is an apocalyptic number.

It is an amenable number.

20946288 is an abundant number, since it is smaller than the sum of its proper divisors (38085648).

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

20946288 is a wasteful number, since it uses less digits than its factorization.

20946288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39693 (or 39687 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 20946288 is about 4576.7114831503. The cubic root of 20946288 is about 275.6569988199.

The spelling of 20946288 in words is "twenty million, nine hundred forty-six thousand, two hundred eighty-eight".