1212828 has 24 divisors (see below), whose sum is σ = 2849280. Its totient is φ = 401520.

The previous prime is 1212817. The next prime is 1212839. The reversal of 1212828 is 8282121.

It is an interprime number because it is at equal distance from previous prime (1212817) and next prime (1212839).

It is a junction number, because it is equal to n+sod(n) for n = 1212798 and 1212807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2293 + ... + 2771.

It is an arithmetic number, because the mean of its divisors is an integer number (118720).

2^1212828 is an apocalyptic number.

It is an amenable number.

1212828 is an abundant number, since it is smaller than the sum of its proper divisors (1636452).

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

1212828 is a wasteful number, since it uses less digits than its factorization.

1212828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697 (or 695 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The square root of 1212828 is about 1101.2847043340. The cubic root of 1212828 is about 106.6431762509.

Adding to 1212828 its reverse (8282121), we get a palindrome (9494949).

The spelling of 1212828 in words is "one million, two hundred twelve thousand, eight hundred twenty-eight".