16421167 has 8 divisors (see below), whose sum is σ = 19871136. Its totient is φ = 13247232.

The previous prime is 16421161. The next prime is 16421179. The reversal of 16421167 is 76112461.

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 16421167 - 2³ = 16421159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16421161) 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, 68878 + ... + 69115.

It is an arithmetic number, because the mean of its divisors is an integer number (2483892).

Almost surely, 2^16421167 is an apocalyptic number.

16421167 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16421167 is a deficient number, since it is larger than the sum of its proper divisors (3449969).

16421167 is a wasteful number, since it uses less digits than its factorization.

16421167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138017.

The product of its digits is 2016, while the sum is 28.

The square root of 16421167 is about 4052.3039125910. The cubic root of 16421167 is about 254.1760770979.

It can be divided in two parts, 1642 and 1167, that added together give a square (2809 = 53²).

The spelling of 16421167 in words is "sixteen million, four hundred twenty-one thousand, one hundred sixty-seven".