14722821 has 12 divisors (see below), whose sum is σ = 21309600. Its totient is φ = 9795240.

The previous prime is 14722811. The next prime is 14722823. The reversal of 14722821 is 12822741.

It is not a de Polignac number, because 14722821 - 2⁷ = 14722693 is a prime.

It is a super-2 number, since 2×14722821² = 433522916396082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14722823) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4026 + ... + 6756.

It is an arithmetic number, because the mean of its divisors is an integer number (1775800).

Almost surely, 2^14722821 is an apocalyptic number.

It is an amenable number.

14722821 is a deficient number, since it is larger than the sum of its proper divisors (6586779).

14722821 is a wasteful number, since it uses less digits than its factorization.

14722821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3336 (or 3333 counting only the distinct ones).

The product of its digits is 1792, while the sum is 27.

The square root of 14722821 is about 3837.0328380143. The cubic root of 14722821 is about 245.0926818582.

The spelling of 14722821 in words is "fourteen million, seven hundred twenty-two thousand, eight hundred twenty-one".