20292888 has 128 divisors (see below), whose sum is σ = 64512000. Its totient is φ = 5166720.

The previous prime is 20292869. The next prime is 20292889. The reversal of 20292888 is 88829202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20292889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 145923 + ... + 146061.

It is an arithmetic number, because the mean of its divisors is an integer number (504000).

Almost surely, 2^20292888 is an apocalyptic number.

20292888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20292888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32256000).

20292888 is an abundant number, since it is smaller than the sum of its proper divisors (44219112).

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

20292888 is a wasteful number, since it uses less digits than its factorization.

20292888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 39.

The square root of 20292888 is about 4504.7628128460. The cubic root of 20292888 is about 272.7603795769.

The spelling of 20292888 in words is "twenty million, two hundred ninety-two thousand, eight hundred eighty-eight".