16191672 has 64 divisors (see below), whose sum is σ = 47769600. Its totient is φ = 4475520.

The previous prime is 16191671. The next prime is 16191677. The reversal of 16191672 is 27619161.

16191672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16191671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3654 + ... + 6762.

It is an arithmetic number, because the mean of its divisors is an integer number (746400).

Almost surely, 2^16191672 is an apocalyptic number.

16191672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16191672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23884800).

16191672 is an abundant number, since it is smaller than the sum of its proper divisors (31577928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16191672 is a wasteful number, since it uses less digits than its factorization.

16191672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3156 (or 3152 counting only the distinct ones).

The product of its digits is 4536, while the sum is 33.

The square root of 16191672 is about 4023.8876723885. The cubic root of 16191672 is about 252.9864334719.

The spelling of 16191672 in words is "sixteen million, one hundred ninety-one thousand, six hundred seventy-two".