20343288 has 96 divisors (see below), whose sum is σ = 61891200. Its totient is φ = 5457408.

The previous prime is 20343287. The next prime is 20343329. The reversal of 20343288 is 88234302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343287) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48343 + ... + 48761.

It is an arithmetic number, because the mean of its divisors is an integer number (644700).

Almost surely, 2^20343288 is an apocalyptic number.

20343288 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 20343288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30945600).

20343288 is an abundant number, since it is smaller than the sum of its proper divisors (41547912).

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

20343288 is a wasteful number, since it uses less digits than its factorization.

20343288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 20343288 is about 4510.3534229592. The cubic root of 20343288 is about 272.9860047301.

The spelling of 20343288 in words is "twenty million, three hundred forty-three thousand, two hundred eighty-eight".