1361216828 has 48 divisors (see below), whose sum is σ = 2495199168. Its totient is φ = 649152000.

The previous prime is 1361216783. The next prime is 1361216839. The reversal of 1361216828 is 8286121631.

It is a super-2 number, since 2×1361216828² = 3705822505660763168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1361216791 and 1361216800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2952518 + ... + 2952978.

It is an arithmetic number, because the mean of its divisors is an integer number (51983316).

Almost surely, 2^1361216828 is an apocalyptic number.

It is an amenable number.

1361216828 is a deficient number, since it is larger than the sum of its proper divisors (1133982340).

1361216828 is a wasteful number, since it uses less digits than its factorization.

1361216828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 852 counting only the distinct ones).

The product of its digits is 27648, while the sum is 38.

The square root of 1361216828 is about 36894.6720814808. The cubic root of 1361216828 is about 1108.2619847765.

The spelling of 1361216828 in words is "one billion, three hundred sixty-one million, two hundred sixteen thousand, eight hundred twenty-eight".