14670021 has 16 divisors (see below), whose sum is σ = 20611584. Its totient is φ = 9262704.

The previous prime is 14670013. The next prime is 14670023. The reversal of 14670021 is 12007641.

It is not a de Polignac number, because 14670021 - 2³ = 14670013 is a prime.

It is a super-2 number, since 2×14670021² = 430419032280882, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 14670021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14670023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6390 + ... + 8376.

It is an arithmetic number, because the mean of its divisors is an integer number (1288224).

Almost surely, 2^14670021 is an apocalyptic number.

It is an amenable number.

14670021 is a deficient number, since it is larger than the sum of its proper divisors (5941563).

14670021 is a wasteful number, since it uses less digits than its factorization.

14670021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2120.

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 14670021 is about 3830.1463418517. The cubic root of 14670021 is about 244.7993414641.

Adding to 14670021 its reverse (12007641), we get a palindrome (26677662).

The spelling of 14670021 in words is "fourteen million, six hundred seventy thousand, twenty-one".