47722222 has 4 divisors (see below), whose sum is σ = 71583336. Its totient is φ = 23861110.

The previous prime is 47722219. The next prime is 47722231. The reversal of 47722222 is 22222774.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11930554 + ... + 11930557.

It is an arithmetic number, because the mean of its divisors is an integer number (17895834).

Almost surely, 2^47722222 is an apocalyptic number.

47722222 is a deficient number, since it is larger than the sum of its proper divisors (23861114).

47722222 is a wasteful number, since it uses less digits than its factorization.

47722222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23861113.

The product of its digits is 6272, while the sum is 28.

The square root of 47722222 is about 6908.1272426035. The cubic root of 47722222 is about 362.7217116940.

Adding to 47722222 its reverse (22222774), we get a palindrome (69944996).

The spelling of 47722222 in words is "forty-seven million, seven hundred twenty-two thousand, two hundred twenty-two".