47787222 has 32 divisors (see below), whose sum is σ = 111896064. Its totient is φ = 13320000.

The previous prime is 47787197. The next prime is 47787247. The reversal of 47787222 is 22278774.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (47787197) and next prime (47787247).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12154 + ... + 15597.

It is an arithmetic number, because the mean of its divisors is an integer number (3496752).

Almost surely, 2^47787222 is an apocalyptic number.

47787222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

47787222 is an abundant number, since it is smaller than the sum of its proper divisors (64108842).

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

47787222 is a wasteful number, since it uses less digits than its factorization.

47787222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27804.

The product of its digits is 87808, while the sum is 39.

The square root of 47787222 is about 6912.8302452758. The cubic root of 47787222 is about 362.8863185519.

The spelling of 47787222 in words is "forty-seven million, seven hundred eighty-seven thousand, two hundred twenty-two".