16421366 has 24 divisors (see below), whose sum is σ = 27509664. Its totient is φ = 7308000.

The previous prime is 16421357. The next prime is 16421387. The reversal of 16421366 is 66312461.

It is a happy number.

It is a super-2 number, since 2×16421366² = 539322522611912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21491 + ... + 22241.

It is an arithmetic number, because the mean of its divisors is an integer number (1146236).

Almost surely, 2^16421366 is an apocalyptic number.

16421366 is a deficient number, since it is larger than the sum of its proper divisors (11088298).

16421366 is a wasteful number, since it uses less digits than its factorization.

16421366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824 (or 795 counting only the distinct ones).

The product of its digits is 5184, while the sum is 29.

The square root of 16421366 is about 4052.3284664499. The cubic root of 16421366 is about 254.1771038385.

The spelling of 16421366 in words is "sixteen million, four hundred twenty-one thousand, three hundred sixty-six".