47222780 has 48 divisors (see below), whose sum is σ = 110509056. Its totient is φ = 16802880.

The previous prime is 47222761. The next prime is 47222783. The reversal of 47222780 is 8722274.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47222783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8057 + ... + 12623.

It is an arithmetic number, because the mean of its divisors is an integer number (2302272).

Almost surely, 2^47222780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47222780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55254528).

47222780 is an abundant number, since it is smaller than the sum of its proper divisors (63286276).

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

47222780 is a wasteful number, since it uses less digits than its factorization.

47222780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4634 (or 4632 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 47222780 is about 6871.8832935375. The cubic root of 47222780 is about 361.4519039921.

The spelling of 47222780 in words is "forty-seven million, two hundred twenty-two thousand, seven hundred eighty".