2840722 has 8 divisors (see below), whose sum is σ = 4319676. Its totient is φ = 1400832.

The previous prime is 2840699. The next prime is 2840723. The reversal of 2840722 is 2270482.

It can be written as a sum of positive squares in 2 ways, for example, as 2725801 + 114921 = 1651^2 + 339^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2840723) 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, 9583 + ... + 9874.

2^2840722 is an apocalyptic number.

2840722 is a deficient number, since it is larger than the sum of its proper divisors (1478954).

2840722 is a wasteful number, since it uses less digits than its factorization.

2840722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19532.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2840722 is about 1685.4441551116. Note that the first 3 decimals coincide. The cubic root of 2840722 is about 141.6259746258.

The spelling of 2840722 in words is "two million, eight hundred forty thousand, seven hundred twenty-two".