47766228 has 48 divisors (see below), whose sum is σ = 117841920. Its totient is φ = 15017184.

The previous prime is 47766227. The next prime is 47766259. The reversal of 47766228 is 82266774.

It is a super-2 number, since 2×47766228² = 4563225074695968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 47766228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47766227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87051 + ... + 87597.

It is an arithmetic number, because the mean of its divisors is an integer number (2455040).

Almost surely, 2^47766228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47766228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58920960).

47766228 is an abundant number, since it is smaller than the sum of its proper divisors (70075692).

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

47766228 is a wasteful number, since it uses less digits than its factorization.

47766228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 956 (or 954 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 47766228 is about 6911.3115976636. The cubic root of 47766228 is about 362.8331693977.

The spelling of 47766228 in words is "forty-seven million, seven hundred sixty-six thousand, two hundred twenty-eight".