1722264 has 16 divisors (see below), whose sum is σ = 4305720. Its totient is φ = 574080.

The previous prime is 1722251. The next prime is 1722283. The reversal of 1722264 is 4622271.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 71761 = 1722264 / (1 + 7 + 2 + 2 + 2 + 6 + 4).

It is a congruent number.

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, 35857 + ... + 35904.

2^1722264 is an apocalyptic number.

It is an amenable number.

1722264 is an abundant number, since it is smaller than the sum of its proper divisors (2583456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1722264 is a wasteful number, since it uses less digits than its factorization.

1722264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71770 (or 71766 counting only the distinct ones).

The product of its digits is 1344, while the sum is 24.

The square root of 1722264 is about 1312.3505629214. The cubic root of 1722264 is about 119.8670750345.

The spelling of 1722264 in words is "one million, seven hundred twenty-two thousand, two hundred sixty-four".