20014840 has 32 divisors (see below), whose sum is σ = 46488960. Its totient is φ = 7747200.

The previous prime is 20014837. The next prime is 20014859. The reversal of 20014840 is 4841002.

It is a congruent number.

It is an unprimeable number.

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, 6831 + ... + 9310.

It is an arithmetic number, because the mean of its divisors is an integer number (1452780).

Almost surely, 2^20014840 is an apocalyptic number.

20014840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20014840 is an abundant number, since it is smaller than the sum of its proper divisors (26474120).

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

20014840 is a wasteful number, since it uses less digits than its factorization.

20014840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16183 (or 16179 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 20014840 is about 4473.7948097784. The cubic root of 20014840 is about 271.5088816569.

Adding to 20014840 its reverse (4841002), we get a palindrome (24855842).

The spelling of 20014840 in words is "twenty million, fourteen thousand, eight hundred forty".