14878821 has 8 divisors (see below), whose sum is σ = 19856704. Its totient is φ = 9910080.

The previous prime is 14878813. The next prime is 14878841. The reversal of 14878821 is 12887841.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 14878821 - 2³ = 14878813 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 14878821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14878841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3936 + ... + 6726.

It is an arithmetic number, because the mean of its divisors is an integer number (2482088).

Almost surely, 2^14878821 is an apocalyptic number.

It is an amenable number.

14878821 is a deficient number, since it is larger than the sum of its proper divisors (4977883).

14878821 is a wasteful number, since it uses less digits than its factorization.

14878821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its digits is 28672, while the sum is 39.

The square root of 14878821 is about 3857.3074806139. The cubic root of 14878821 is about 245.9552929530.

The spelling of 14878821 in words is "fourteen million, eight hundred seventy-eight thousand, eight hundred twenty-one".