1423636 has 6 divisors (see below), whose sum is σ = 2491370. Its totient is φ = 711816.

The previous prime is 1423627. The next prime is 1423637. The reversal of 1423636 is 6363241.

It can be written as a sum of positive squares in only one way, i.e., 988036 + 435600 = 994^2 + 660^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1423636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1423637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177951 + ... + 177958.

2^1423636 is an apocalyptic number.

It is an amenable number.

1423636 is a deficient number, since it is larger than the sum of its proper divisors (1067734).

1423636 is a wasteful number, since it uses less digits than its factorization.

1423636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355913 (or 355911 counting only the distinct ones).

The product of its digits is 2592, while the sum is 25.

The square root of 1423636 is about 1193.1621851199. The cubic root of 1423636 is about 112.4949396901.

Adding to 1423636 its reverse (6363241), we get a palindrome (7786877).

The spelling of 1423636 in words is "one million, four hundred twenty-three thousand, six hundred thirty-six".