2028722 has 4 divisors (see below), whose sum is σ = 3043086. Its totient is φ = 1014360.

The previous prime is 2028713. The next prime is 2028749. The reversal of 2028722 is 2278202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1324801 + 703921 = 1151^2 + 839^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507179 + ... + 507182.

2^2028722 is an apocalyptic number.

2028722 is a deficient number, since it is larger than the sum of its proper divisors (1014364).

2028722 is a wasteful number, since it uses less digits than its factorization.

2028722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014363.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 2028722 is about 1424.3321241901. The cubic root of 2028722 is about 126.5923648569.

The spelling of 2028722 in words is "two million, twenty-eight thousand, seven hundred twenty-two".