1822724 has 6 divisors (see below), whose sum is σ = 3189774. Its totient is φ = 911360.

The previous prime is 1822703. The next prime is 1822781. The reversal of 1822724 is 4272281.

It can be written as a sum of positive squares in only one way, i.e., 1768900 + 53824 = 1330^2 + 232^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1822693 and 1822702.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227837 + ... + 227844.

It is an arithmetic number, because the mean of its divisors is an integer number (531629).

2^1822724 is an apocalyptic number.

It is an amenable number.

1822724 is a deficient number, since it is larger than the sum of its proper divisors (1367050).

1822724 is a wasteful number, since it uses less digits than its factorization.

1822724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455685 (or 455683 counting only the distinct ones).

The product of its digits is 1792, while the sum is 26.

The square root of 1822724 is about 1350.0829604139. The cubic root of 1822724 is about 122.1537969002.

The spelling of 1822724 in words is "one million, eight hundred twenty-two thousand, seven hundred twenty-four".