20140288 has 36 divisors (see below), whose sum is σ = 45949120. Its totient is φ = 8630784.

The previous prime is 20140279. The next prime is 20140301. The reversal of 20140288 is 88204102.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3828 + ... + 7411.

Almost surely, 2^20140288 is an apocalyptic number.

20140288 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20140288 is an abundant number, since it is smaller than the sum of its proper divisors (25808832).

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

20140288 is an equidigital number, since it uses as much as digits as its factorization.

20140288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11262 (or 11248 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 20140288 is about 4487.7932216179. The cubic root of 20140288 is about 272.0749505102.

The spelling of 20140288 in words is "twenty million, one hundred forty thousand, two hundred eighty-eight".