1252628 has 36 divisors (see below), whose sum is σ = 2536380. Its totient is φ = 539136.

The previous prime is 1252609. The next prime is 1252631. The reversal of 1252628 is 8262521.

It can be written as a sum of positive squares in 6 ways, for example, as 24964 + 1227664 = 158^2 + 1108^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a junction number, because it is equal to n+sod(n) for n = 1252597 and 1252606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11438 + ... + 11546.

It is an arithmetic number, because the mean of its divisors is an integer number (70455).

2^1252628 is an apocalyptic number.

It is an amenable number.

1252628 is an abundant number, since it is smaller than the sum of its proper divisors (1283752).

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

1252628 is a wasteful number, since it uses less digits than its factorization.

1252628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156 (or 141 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 1252628 is about 1119.2086490016. The cubic root of 1252628 is about 107.7971730505.

The spelling of 1252628 in words is "one million, two hundred fifty-two thousand, six hundred twenty-eight".