1622672 has 20 divisors (see below), whose sum is σ = 3230076. Its totient is φ = 789120.

The previous prime is 1622671. The next prime is 1622681. The reversal of 1622672 is 2762261.

It can be written as a sum of positive squares in 2 ways, for example, as 1008016 + 614656 = 1004^2 + 784^2 .

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1622671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 779 + ... + 1962.

2^1622672 is an apocalyptic number.

It is an amenable number.

1622672 is a deficient number, since it is larger than the sum of its proper divisors (1607404).

1622672 is a wasteful number, since it uses less digits than its factorization.

1622672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2786 (or 2780 counting only the distinct ones).

The product of its digits is 2016, while the sum is 26.

The square root of 1622672 is about 1273.8414344023. The cubic root of 1622672 is about 117.5105649169.

The spelling of 1622672 in words is "one million, six hundred twenty-two thousand, six hundred seventy-two".