891942030 has 160 divisors (see below), whose sum is σ = 2800106496. Its totient is φ = 199475136.

The previous prime is 891942019. The next prime is 891942071. The reversal of 891942030 is 30249198.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 264817 + ... + 268163.

Almost surely, 2^891942030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 891942030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1400053248).

891942030 is an abundant number, since it is smaller than the sum of its proper divisors (1908164466).

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

891942030 is a wasteful number, since it uses less digits than its factorization.

891942030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3420 (or 3411 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 891942030 is about 29865.3985407863. The cubic root of 891942030 is about 962.5993034103.

The spelling of 891942030 in words is "eight hundred ninety-one million, nine hundred forty-two thousand, thirty".