16721468 has 6 divisors (see below), whose sum is σ = 29262576. Its totient is φ = 8360732.

The previous prime is 16721461. The next prime is 16721473. The reversal of 16721468 is 86412761.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16721461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2090180 + ... + 2090187.

It is an arithmetic number, because the mean of its divisors is an integer number (4877096).

Almost surely, 2^16721468 is an apocalyptic number.

It is an amenable number.

16721468 is a deficient number, since it is larger than the sum of its proper divisors (12541108).

16721468 is a wasteful number, since it uses less digits than its factorization.

16721468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4180371 (or 4180369 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 16721468 is about 4089.1891616799. The cubic root of 16721468 is about 255.7161363654.

The spelling of 16721468 in words is "sixteen million, seven hundred twenty-one thousand, four hundred sixty-eight".