2820178228 has 24 divisors (see below), whose sum is σ = 5680942400. Its totient is φ = 1199950848.

The previous prime is 2820178217. The next prime is 2820178243. The reversal of 2820178228 is 8228710282.

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, 358413 + ... + 366196.

Almost surely, 2^2820178228 is an apocalyptic number.

2820178228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2820178228 is an abundant number, since it is smaller than the sum of its proper divisors (2860764172).

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

2820178228 is a wasteful number, since it uses less digits than its factorization.

2820178228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724759 (or 724757 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 40.

The square root of 2820178228 is about 53105.3502765964. The cubic root of 2820178228 is about 1412.8374075628.

The spelling of 2820178228 in words is "two billion, eight hundred twenty million, one hundred seventy-eight thousand, two hundred twenty-eight".