14987220 has 96 divisors (see below), whose sum is σ = 44381568. Its totient is φ = 3773952.

The previous prime is 14987213. The next prime is 14987233. The reversal of 14987220 is 2278941.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 95382 + ... + 95538.

It is an arithmetic number, because the mean of its divisors is an integer number (462308).

Almost surely, 2^14987220 is an apocalyptic number.

14987220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 14987220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22190784).

14987220 is an abundant number, since it is smaller than the sum of its proper divisors (29394348).

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

14987220 is a wasteful number, since it uses less digits than its factorization.

14987220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 14987220 is about 3871.3331037254. Note that the first 3 decimals coincide. The cubic root of 14987220 is about 246.5511471092.

The spelling of 14987220 in words is "fourteen million, nine hundred eighty-seven thousand, two hundred twenty".