16491427 has 8 divisors (see below), whose sum is σ = 16867440. Its totient is φ = 16117920.

The previous prime is 16491379. The next prime is 16491443. The reversal of 16491427 is 72419461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16491427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16491392 and 16491401.

It is not an unprimeable number, because it can be changed into a prime (16491467) 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, 19677 + ... + 20497.

It is an arithmetic number, because the mean of its divisors is an integer number (2108430).

Almost surely, 2^16491427 is an apocalyptic number.

16491427 is a deficient number, since it is larger than the sum of its proper divisors (376013).

16491427 is an equidigital number, since it uses as much as digits as its factorization.

16491427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1253.

The product of its digits is 12096, while the sum is 34.

The square root of 16491427 is about 4060.9638018579. The cubic root of 16491427 is about 254.5380692701.

The spelling of 16491427 in words is "sixteen million, four hundred ninety-one thousand, four hundred twenty-seven".