1422628 has 12 divisors (see below), whose sum is σ = 2636172. Its totient is φ = 669440.

The previous prime is 1422601. The next prime is 1422637. The reversal of 1422628 is 8262241.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1065024 + 357604 = 1032^2 + 598^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10393 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (219681).

2^1422628 is an apocalyptic number.

It is an amenable number.

1422628 is a deficient number, since it is larger than the sum of its proper divisors (1213544).

1422628 is a wasteful number, since it uses less digits than its factorization.

1422628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20942 (or 20940 counting only the distinct ones).

The product of its digits is 1536, while the sum is 25.

The square root of 1422628 is about 1192.7397033720. The cubic root of 1422628 is about 112.4683828847.

Adding to 1422628 its reverse (8262241), we get a palindrome (9684869).

The spelling of 1422628 in words is "one million, four hundred twenty-two thousand, six hundred twenty-eight".