20084440 has 32 divisors (see below), whose sum is σ = 46244880. Its totient is φ = 7846272.

The previous prime is 20084437. The next prime is 20084447. The reversal of 20084440 is 4448002.

It is a super-2 number, since 2×20084440² = 806769460227200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20084447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119 + ... + 7558.

Almost surely, 2^20084440 is an apocalyptic number.

20084440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20084440 is an abundant number, since it is smaller than the sum of its proper divisors (26160440).

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

20084440 is a wasteful number, since it uses less digits than its factorization.

20084440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11731 (or 11727 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 20084440 is about 4481.5666903439. The cubic root of 20084440 is about 271.8232343421.

The spelling of 20084440 in words is "twenty million, eighty-four thousand, four hundred forty".