1772289 has 12 divisors (see below), whose sum is σ = 2575872. Its totient is φ = 1174200.

The previous prime is 1772273. The next prime is 1772291. The reversal of 1772289 is 9822771.

It is not a de Polignac number, because 1772289 - 2⁴ = 1772273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1772209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1204 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (214656).

2^1772289 is an apocalyptic number.

It is an amenable number.

1772289 is a deficient number, since it is larger than the sum of its proper divisors (803583).

1772289 is a wasteful number, since it uses less digits than its factorization.

1772289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1225 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 1772289 is about 1331.2734504977. The cubic root of 1772289 is about 121.0165721900.

The spelling of 1772289 in words is "one million, seven hundred seventy-two thousand, two hundred eighty-nine".