14987820 has 24 divisors (see below), whose sum is σ = 41966064. Its totient is φ = 3996736.

The previous prime is 14987813. The next prime is 14987851. The reversal of 14987820 is 2878941.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 124839 + ... + 124958.

It is an arithmetic number, because the mean of its divisors is an integer number (1748586).

Almost surely, 2^14987820 is an apocalyptic number.

14987820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14987820 is an abundant number, since it is smaller than the sum of its proper divisors (26978244).

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

14987820 is a wasteful number, since it uses less digits than its factorization.

14987820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249809 (or 249807 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 14987820 is about 3871.4105956357. The cubic root of 14987820 is about 246.5544372172.

The spelling of 14987820 in words is "fourteen million, nine hundred eighty-seven thousand, eight hundred twenty".