2291521392 has 120 divisors (see below), whose sum is σ = 6883871904. Its totient is φ = 709005312.

The previous prime is 2291521369. The next prime is 2291521411. The reversal of 2291521392 is 2931251922.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 172293 + ... + 185115.

Almost surely, 2^2291521392 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 2291521392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3441935952).

2291521392 is an abundant number, since it is smaller than the sum of its proper divisors (4592350512).

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

2291521392 is a wasteful number, since it uses less digits than its factorization.

2291521392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927 (or 12918 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 2291521392 is about 47869.8380193625. The cubic root of 2291521392 is about 1318.3821225179.

The spelling of 2291521392 in words is "two billion, two hundred ninety-one million, five hundred twenty-one thousand, three hundred ninety-two".