47221278 has 16 divisors (see below), whose sum is σ = 101707536. Its totient is φ = 14529600.

The previous prime is 47221199. The next prime is 47221283. The reversal of 47221278 is 87212274.

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 in 7 ways as a sum of consecutive naturals, for example, 302623 + ... + 302778.

It is an arithmetic number, because the mean of its divisors is an integer number (6356721).

Almost surely, 2^47221278 is an apocalyptic number.

47221278 is an abundant number, since it is smaller than the sum of its proper divisors (54486258).

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

47221278 is a wasteful number, since it uses less digits than its factorization.

47221278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605419.

The product of its digits is 12544, while the sum is 33.

The square root of 47221278 is about 6871.7740067613. The cubic root of 47221278 is about 361.4480717561.

The spelling of 47221278 in words is "forty-seven million, two hundred twenty-one thousand, two hundred seventy-eight".