47722228 has 6 divisors (see below), whose sum is σ = 83513906. Its totient is φ = 23861112.

The previous prime is 47722219. The next prime is 47722231. The reversal of 47722228 is 82222774.

It can be written as a sum of positive squares in only one way, i.e., 47720464 + 1764 = 6908^2 + 42^2 .

It is a super-2 number, since 2×47722228² = 4554822090567968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47722193 and 47722202.

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, 5965275 + ... + 5965282.

Almost surely, 2^47722228 is an apocalyptic number.

It is an amenable number.

47722228 is a deficient number, since it is larger than the sum of its proper divisors (35791678).

47722228 is a wasteful number, since it uses less digits than its factorization.

47722228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11930561 (or 11930559 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 47722228 is about 6908.1276768745. The cubic root of 47722228 is about 362.7217268954.

The spelling of 47722228 in words is "forty-seven million, seven hundred twenty-two thousand, two hundred twenty-eight".