47775228 has 24 divisors (see below), whose sum is σ = 111589632. Its totient is φ = 15908784.

The previous prime is 47775227. The next prime is 47775229. The reversal of 47775228 is 82257774.

It is an interprime number because it is at equal distance from previous prime (47775227) and next prime (47775229).

It is a self number, because there is not a number n which added to its sum of digits gives 47775228.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47775223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18301 + ... + 20747.

It is an arithmetic number, because the mean of its divisors is an integer number (4649568).

Almost surely, 2^47775228 is an apocalyptic number.

It is an amenable number.

47775228 is an abundant number, since it is smaller than the sum of its proper divisors (63814404).

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

47775228 is a wasteful number, since it uses less digits than its factorization.

47775228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081 (or 4079 counting only the distinct ones).

The product of its digits is 219520, while the sum is 42.

The square root of 47775228 is about 6911.9626735103. The cubic root of 47775228 is about 362.8559560233.

The spelling of 47775228 in words is "forty-seven million, seven hundred seventy-five thousand, two hundred twenty-eight".