891354320 has 20 divisors (see below), whose sum is σ = 2072398980. Its totient is φ = 356541696.

The previous prime is 891354293. The next prime is 891354323. The reversal of 891354320 is 23453198.

It can be written as a sum of positive squares in 2 ways, for example, as 140375104 + 750979216 = 11848^2 + 27404^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-3 number, since 3×891354320³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (891354323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5570885 + ... + 5571044.

It is an arithmetic number, because the mean of its divisors is an integer number (103619949).

Almost surely, 2^891354320 is an apocalyptic number.

891354320 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

891354320 is an abundant number, since it is smaller than the sum of its proper divisors (1181044660).

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

891354320 is a wasteful number, since it uses less digits than its factorization.

891354320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11141942 (or 11141936 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 891354320 is about 29855.5576065831. The cubic root of 891354320 is about 962.3878346833.

The spelling of 891354320 in words is "eight hundred ninety-one million, three hundred fifty-four thousand, three hundred twenty".