2261207228 has 12 divisors (see below), whose sum is σ = 4522414512. Its totient is φ = 969088800.

The previous prime is 2261207203. The next prime is 2261207237. The reversal of 2261207228 is 8227021622.

2261207228 is an admirable number.

It is a super-2 number, since 2×2261207228² = 10226116255918887968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2261207194 and 2261207203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40378673 + ... + 40378728.

It is an arithmetic number, because the mean of its divisors is an integer number (376867876).

Almost surely, 2^2261207228 is an apocalyptic number.

2261207228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

2261207228 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2261207228 is a wasteful number, since it uses less digits than its factorization.

2261207228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80757412 (or 80757410 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 2261207228 is about 47552.1527167803. The cubic root of 2261207228 is about 1312.5427426504.

The spelling of 2261207228 in words is "two billion, two hundred sixty-one million, two hundred seven thousand, two hundred twenty-eight".