11272857228 has 36 divisors (see below), whose sum is σ = 28620828600. Its totient is φ = 3741062976.

The previous prime is 11272857209. The next prime is 11272857257. The reversal of 11272857228 is 82275827211.

11272857228 is a `hidden beast` number, since 1 + 1 + 2 + 72 + 8 + 572 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 681553 + ... + 697896.

Almost surely, 2^11272857228 is an apocalyptic number.

11272857228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11272857228 is an abundant number, since it is smaller than the sum of its proper divisors (17347971372).

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

11272857228 is a wasteful number, since it uses less digits than its factorization.

11272857228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379686 (or 1379681 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The spelling of 11272857228 in words is "eleven billion, two hundred seventy-two million, eight hundred fifty-seven thousand, two hundred twenty-eight".