1722002 has 4 divisors (see below), whose sum is σ = 2583006. Its totient is φ = 861000.

The previous prime is 1721983. The next prime is 1722013. The reversal of 1722002 is 2002271.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2002271 = 71 ⋅28201.

It can be written as a sum of positive squares in only one way, i.e., 1018081 + 703921 = 1009^2 + 839^2 .

It is a nialpdrome in base 8.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430499 + ... + 430502.

2^1722002 is an apocalyptic number.

1722002 is a deficient number, since it is larger than the sum of its proper divisors (861004).

1722002 is an equidigital number, since it uses as much as digits as its factorization.

1722002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861003.

The product of its (nonzero) digits is 56, while the sum is 14.

The square root of 1722002 is about 1312.2507382356. The cubic root of 1722002 is about 119.8609964530.

Adding to 1722002 its reverse (2002271), we get a palindrome (3724273).

The spelling of 1722002 in words is "one million, seven hundred twenty-two thousand, two".