1622272 has 18 divisors (see below), whose sum is σ = 3238718. Its totient is φ = 811008.

The previous prime is 1622263. The next prime is 1622273. The reversal of 1622272 is 2722261.

It can be written as a sum of positive squares in only one way, i.e., 1290496 + 331776 = 1136^2 + 576^2 .

It is not an unprimeable number, because it can be changed into a prime (1622273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2913 + ... + 3424.

2^1622272 is an apocalyptic number.

It is an amenable number.

1622272 is a deficient number, since it is larger than the sum of its proper divisors (1616446).

1622272 is an frugal number, since it uses more digits than its factorization.

1622272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6353 (or 6339 counting only the distinct ones).

The product of its digits is 672, while the sum is 22.

The square root of 1622272 is about 1273.6844193127. The cubic root of 1622272 is about 117.5009083980.

The spelling of 1622272 in words is "one million, six hundred twenty-two thousand, two hundred seventy-two".