2190722 has 8 divisors (see below), whose sum is σ = 3479436. Its totient is φ = 1030912.

The previous prime is 2190691. The next prime is 2190737. The reversal of 2190722 is 2270912.

It can be written as a sum of positive squares in 2 ways, for example, as 2157961 + 32761 = 1469^2 + 181^2 .

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

It is a super-3 number, since 3×2190722³ = 31541552333436741144, which contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32183 + ... + 32250.

2^2190722 is an apocalyptic number.

2190722 is a deficient number, since it is larger than the sum of its proper divisors (1288714).

2190722 is a wasteful number, since it uses less digits than its factorization.

2190722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64452.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 2190722 is about 1480.1087797861. The cubic root of 2190722 is about 129.8760554364.

The spelling of 2190722 in words is "two million, one hundred ninety thousand, seven hundred twenty-two".