14991980 has 24 divisors (see below), whose sum is σ = 31561488. Its totient is φ = 5981888.

The previous prime is 14991973. The next prime is 14991997. The reversal of 14991980 is 8919941.

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, 11102 + ... + 12378.

It is an arithmetic number, because the mean of its divisors is an integer number (1315062).

Almost surely, 2^14991980 is an apocalyptic number.

14991980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14991980 is an abundant number, since it is smaller than the sum of its proper divisors (16569508).

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

14991980 is a wasteful number, since it uses less digits than its factorization.

14991980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1873 (or 1871 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 41.

The square root of 14991980 is about 3871.9478302271. The cubic root of 14991980 is about 246.5772462176.

It can be divided in two parts, 149 and 91980, that added together give a palindrome (92129).

The spelling of 14991980 in words is "fourteen million, nine hundred ninety-one thousand, nine hundred eighty".