891672 has 32 divisors (see below), whose sum is σ = 2274480. Its totient is φ = 291200.

The previous prime is 891661. The next prime is 891677. The reversal of 891672 is 276198.

891672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891677) 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, 922 + ... + 1622.

2⁸⁹¹⁶⁷² is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 891672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1137240).

891672 is an abundant number, since it is smaller than the sum of its proper divisors (1382808).

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

891672 is a wasteful number, since it uses less digits than its factorization.

891672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763 (or 759 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 891672 is about 944.2838556282. The cubic root of 891672 is about 96.2502153253.

The spelling of 891672 in words is "eight hundred ninety-one thousand, six hundred seventy-two".