27769893228 has 336 divisors, whose sum is σ = 91359550464. Its totient is φ = 7171960320.

The previous prime is 27769893149. The next prime is 27769893233. The reversal of 27769893228 is 82239896772.

27769893228 is a `hidden beast` number, since 277 + 69 + 89 + 3 + 228 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 75667101 + ... + 75667467.

It is an arithmetic number, because the mean of its divisors is an integer number (271903424).

Almost surely, 2^27769893228 is an apocalyptic number.

27769893228 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27769893228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45679775232).

27769893228 is an abundant number, since it is smaller than the sum of its proper divisors (63589657236).

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

27769893228 is a wasteful number, since it uses less digits than its factorization.

27769893228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744 (or 727 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 63.

The spelling of 27769893228 in words is "twenty-seven billion, seven hundred sixty-nine million, eight hundred ninety-three thousand, two hundred twenty-eight".