1722276 has 48 divisors (see below), whose sum is σ = 4596480. Its totient is φ = 557280.

The previous prime is 1722251. The next prime is 1722283. The reversal of 1722276 is 6722271.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3781 + ... + 4211.

It is an arithmetic number, because the mean of its divisors is an integer number (95760).

2^1722276 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2298240).

1722276 is an abundant number, since it is smaller than the sum of its proper divisors (2874204).

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

1722276 is a wasteful number, since it uses less digits than its factorization.

1722276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481 (or 473 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 1722276 is about 1312.3551348625. The cubic root of 1722276 is about 119.8673534281.

The spelling of 1722276 in words is "one million, seven hundred twenty-two thousand, two hundred seventy-six".