10191216 has 80 divisors (see below), whose sum is σ = 30752000. Its totient is φ = 2907072.

The previous prime is 10191197. The next prime is 10191229. The reversal of 10191216 is 61219101.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 10191192 and 10191201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16155 + ... + 16773.

It is an arithmetic number, because the mean of its divisors is an integer number (384400).

Almost surely, 2^10191216 is an apocalyptic number.

10191216 is a gapful number since it is divisible by the number (16) 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 10191216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15376000).

10191216 is an abundant number, since it is smaller than the sum of its proper divisors (20560784).

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

10191216 is an equidigital number, since it uses as much as digits as its factorization.

10191216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651 (or 631 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 21.

The square root of 10191216 is about 3192.3683997935. The cubic root of 10191216 is about 216.8080161159.

The spelling of 10191216 in words is "ten million, one hundred ninety-one thousand, two hundred sixteen".