14878421 has 8 divisors (see below), whose sum is σ = 15506400. Its totient is φ = 14258160.

The previous prime is 14878399. The next prime is 14878427. The reversal of 14878421 is 12487841.

14878421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 14878421 - 2²² = 10684117 is a prime.

It is a super-2 number, since 2×14878421² = 442734822906482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14878427) 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, 2186 + ... + 5876.

It is an arithmetic number, because the mean of its divisors is an integer number (1938300).

Almost surely, 2^14878421 is an apocalyptic number.

It is an amenable number.

14878421 is a deficient number, since it is larger than the sum of its proper divisors (627979).

14878421 is a wasteful number, since it uses less digits than its factorization.

14878421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3859.

The product of its digits is 14336, while the sum is 35.

The square root of 14878421 is about 3857.2556306265. The cubic root of 14878421 is about 245.9530888582.

The spelling of 14878421 in words is "fourteen million, eight hundred seventy-eight thousand, four hundred twenty-one".