891423148 has 96 divisors (see below), whose sum is σ = 2021741568. Its totient is φ = 333849600.

The previous prime is 891423131. The next prime is 891423157. The reversal of 891423148 is 841324198.

It is a self number, because there is not a number n which added to its sum of digits gives 891423148.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 921361 + ... + 922327.

It is an arithmetic number, because the mean of its divisors is an integer number (21059808).

Almost surely, 2^891423148 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 891423148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1010870784).

891423148 is an abundant number, since it is smaller than the sum of its proper divisors (1130318420).

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

891423148 is a wasteful number, since it uses less digits than its factorization.

891423148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103 (or 1101 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 891423148 is about 29856.7102675429. The cubic root of 891423148 is about 962.4126050518.

The spelling of 891423148 in words is "eight hundred ninety-one million, four hundred twenty-three thousand, one hundred forty-eight".