891049152 has 224 divisors, whose sum is σ = 2905597440. Its totient is φ = 235192320.

The previous prime is 891049127. The next prime is 891049153. The reversal of 891049152 is 251940198.

It is a tau number, because it is divible by the number of its divisors (224).

It is a self number, because there is not a number n which added to its sum of digits gives 891049152.

It is not an unprimeable number, because it can be changed into a prime (891049153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1347702 + ... + 1348362.

Almost surely, 2^891049152 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 891049152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1452798720).

891049152 is an abundant number, since it is smaller than the sum of its proper divisors (2014548288).

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

891049152 is a wasteful number, since it uses less digits than its factorization.

891049152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 749 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 39.

The square root of 891049152 is about 29850.4464288225. The cubic root of 891049152 is about 962.2779930311.

The spelling of 891049152 in words is "eight hundred ninety-one million, forty-nine thousand, one hundred fifty-two".