47775428 has 12 divisors (see below), whose sum is σ = 83662992. Its totient is φ = 23871720.

The previous prime is 47775421. The next prime is 47775437. The reversal of 47775428 is 82457774.

It is not an unprimeable number, because it can be changed into a prime (47775421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4943 + ... + 10953.

It is an arithmetic number, because the mean of its divisors is an integer number (6971916).

Almost surely, 2^47775428 is an apocalyptic number.

It is an amenable number.

47775428 is a deficient number, since it is larger than the sum of its proper divisors (35887564).

47775428 is a wasteful number, since it uses less digits than its factorization.

47775428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8002 (or 8000 counting only the distinct ones).

The product of its digits is 439040, while the sum is 44.

The square root of 47775428 is about 6911.9771411659. The cubic root of 47775428 is about 362.8564623602.

The spelling of 47775428 in words is "forty-seven million, seven hundred seventy-five thousand, four hundred twenty-eight".