1252636 has 48 divisors (see below), whose sum is σ = 2822400. Its totient is φ = 482160.

The previous prime is 1252631. The next prime is 1252639. The reversal of 1252636 is 6362521.

It is a self number, because there is not a number n which added to its sum of digits gives 1252636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1252631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15051 + ... + 15133.

It is an arithmetic number, because the mean of its divisors is an integer number (58800).

2^1252636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1252636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1411200).

1252636 is an abundant number, since it is smaller than the sum of its proper divisors (1569764).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1252636 is a wasteful number, since it uses less digits than its factorization.

1252636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 103 counting only the distinct ones).

The product of its digits is 2160, while the sum is 25.

The square root of 1252636 is about 1119.2122229497. The cubic root of 1252636 is about 107.7974025348.

The spelling of 1252636 in words is "one million, two hundred fifty-two thousand, six hundred thirty-six".