1622722 has 16 divisors (see below), whose sum is σ = 2535552. Its totient is φ = 778320.

The previous prime is 1622711. The next prime is 1622729. The reversal of 1622722 is 2272261.

It is a junction number, because it is equal to n+sod(n) for n = 1622693 and 1622702.

It is not an unprimeable number, because it can be changed into a prime (1622729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5593 + ... + 5875.

It is an arithmetic number, because the mean of its divisors is an integer number (158472).

2^1622722 is an apocalyptic number.

1622722 is a deficient number, since it is larger than the sum of its proper divisors (912830).

1622722 is a wasteful number, since it uses less digits than its factorization.

1622722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

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

The square root of 1622722 is about 1273.8610599277. The cubic root of 1622722 is about 117.5117718702.

Adding to 1622722 its reverse (2272261), we get a palindrome (3894983).

The spelling of 1622722 in words is "one million, six hundred twenty-two thousand, seven hundred twenty-two".