845284228 has 48 divisors (see below), whose sum is σ = 1562888880. Its totient is φ = 399458304.

The previous prime is 845284211. The next prime is 845284289. The reversal of 845284228 is 822482548.

It can be written as a sum of positive squares in 8 ways, for example, as 299220804 + 546063424 = 17298^2 + 23368^2 .

It is a super-2 number, since 2×845284228² = 1429010852211111968, which contains 22 as substring.

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, 1464676 + ... + 1465252.

It is an arithmetic number, because the mean of its divisors is an integer number (32560185).

Almost surely, 2^845284228 is an apocalyptic number.

It is an amenable number.

845284228 is a deficient number, since it is larger than the sum of its proper divisors (717604652).

845284228 is a wasteful number, since it uses less digits than its factorization.

845284228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its digits is 327680, while the sum is 43.

The square root of 845284228 is about 29073.7721666797. The cubic root of 845284228 is about 945.5131831874.

The spelling of 845284228 in words is "eight hundred forty-five million, two hundred eighty-four thousand, two hundred twenty-eight".