16472391 has 8 divisors (see below), whose sum is σ = 23652720. Its totient is φ = 10136832.

The previous prime is 16472383. The next prime is 16472441. The reversal of 16472391 is 19327461.

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

It is not a de Polignac number, because 16472391 - 2³ = 16472383 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16472321) 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, 211146 + ... + 211223.

It is an arithmetic number, because the mean of its divisors is an integer number (2956590).

Almost surely, 2^16472391 is an apocalyptic number.

16472391 is a deficient number, since it is larger than the sum of its proper divisors (7180329).

16472391 is a wasteful number, since it uses less digits than its factorization.

16472391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 422385.

The product of its digits is 9072, while the sum is 33.

The square root of 16472391 is about 4058.6193465266. The cubic root of 16472391 is about 254.4400940773.

The spelling of 16472391 in words is "sixteen million, four hundred seventy-two thousand, three hundred ninety-one".