16721466 has 16 divisors (see below), whose sum is σ = 33501600. Its totient is φ = 5564048.

The previous prime is 16721461. The next prime is 16721473. The reversal of 16721466 is 66412761.

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 in 7 ways as a sum of consecutive naturals, for example, 1840 + ... + 6068.

It is an arithmetic number, because the mean of its divisors is an integer number (2093850).

Almost surely, 2^16721466 is an apocalyptic number.

16721466 is an abundant number, since it is smaller than the sum of its proper divisors (16780134).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16721466 is a wasteful number, since it uses less digits than its factorization.

16721466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4893.

The product of its digits is 12096, while the sum is 33.

The square root of 16721466 is about 4089.1889171326. The cubic root of 16721466 is about 255.7161261703.

The spelling of 16721466 in words is "sixteen million, seven hundred twenty-one thousand, four hundred sixty-six".