47278288 has 10 divisors (see below), whose sum is σ = 91601714. Its totient is φ = 23639136.

The previous prime is 47278277. The next prime is 47278303. The reversal of 47278288 is 88287274.

It can be written as a sum of positive squares in only one way, i.e., 23736384 + 23541904 = 4872^2 + 4852^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1477431 + ... + 1477462.

Almost surely, 2^47278288 is an apocalyptic number.

It is an amenable number.

47278288 is a deficient number, since it is larger than the sum of its proper divisors (44323426).

47278288 is a wasteful number, since it uses less digits than its factorization.

47278288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2954901 (or 2954895 counting only the distinct ones).

The product of its digits is 401408, while the sum is 46.

The square root of 47278288 is about 6875.9208837799. The cubic root of 47278288 is about 361.5934713756.

The spelling of 47278288 in words is "forty-seven million, two hundred seventy-eight thousand, two hundred eighty-eight".