20382288 has 40 divisors (see below), whose sum is σ = 55428000. Its totient is φ = 6436224.

The previous prime is 20382277. The next prime is 20382293. The reversal of 20382288 is 88228302.

It is a super-2 number, since 2×20382288² = 830875328229888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10263 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (1385700).

Almost surely, 2^20382288 is an apocalyptic number.

It is an amenable number.

20382288 is an abundant number, since it is smaller than the sum of its proper divisors (35045712).

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

20382288 is a wasteful number, since it uses less digits than its factorization.

20382288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22379 (or 22373 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 20382288 is about 4514.6747391147. The cubic root of 20382288 is about 273.1603400031.

The spelling of 20382288 in words is "twenty million, three hundred eighty-two thousand, two hundred eighty-eight".