1872722 has 4 divisors (see below), whose sum is σ = 2809086. Its totient is φ = 936360.

The previous prime is 1872721. The next prime is 1872727. The reversal of 1872722 is 2272781.

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., 1234321 + 638401 = 1111^2 + 799^2 .

It is not an unprimeable number, because it can be changed into a prime (1872721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 468179 + ... + 468182.

2^1872722 is an apocalyptic number.

1872722 is a deficient number, since it is larger than the sum of its proper divisors (936364).

1872722 is an equidigital number, since it uses as much as digits as its factorization.

1872722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936363.

The product of its digits is 3136, while the sum is 29.

The square root of 1872722 is about 1368.4743329708. The cubic root of 1872722 is about 123.2606454248.

It can be divided in two parts, 187272 and 2, that multiplied together give a square (374544 = 612²).

The spelling of 1872722 in words is "one million, eight hundred seventy-two thousand, seven hundred twenty-two".