16428251 has 8 divisors (see below), whose sum is σ = 19129824. Its totient is φ = 13815360.

The previous prime is 16428229. The next prime is 16428277. The reversal of 16428251 is 15282461.

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

It is a cyclic number.

It is not a de Polignac number, because 16428251 - 2¹⁰ = 16427227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16428221) 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, 21770 + ... + 22511.

It is an arithmetic number, because the mean of its divisors is an integer number (2391228).

Almost surely, 2^16428251 is an apocalyptic number.

16428251 is a deficient number, since it is larger than the sum of its proper divisors (2701573).

16428251 is an equidigital number, since it uses as much as digits as its factorization.

16428251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44341.

The product of its digits is 3840, while the sum is 29.

The square root of 16428251 is about 4053.1778890150. The cubic root of 16428251 is about 254.2126218914.

The spelling of 16428251 in words is "sixteen million, four hundred twenty-eight thousand, two hundred fifty-one".