2291680 has 24 divisors (see below), whose sum is σ = 5414472. Its totient is φ = 916608.

The previous prime is 2291677. The next prime is 2291683. The reversal of 2291680 is 861922.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2291677) and next prime (2291683).

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2291683) 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, 7002 + ... + 7321.

It is an arithmetic number, because the mean of its divisors is an integer number (225603).

2^2291680 is an apocalyptic number.

2291680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2291680 is an abundant number, since it is smaller than the sum of its proper divisors (3122792).

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

2291680 is a wasteful number, since it uses less digits than its factorization.

2291680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14338 (or 14330 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2291680 is about 1513.8295808974. The cubic root of 2291680 is about 131.8412539156.

The spelling of 2291680 in words is "two million, two hundred ninety-one thousand, six hundred eighty".