47720022 has 72 divisors (see below), whose sum is σ = 115578216. Its totient is φ = 13095936.

The previous prime is 47719999. The next prime is 47720033. The reversal of 47720022 is 22002774.

It is a junction number, because it is equal to n+sod(n) for n = 47719974 and 47720001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 247158 + ... + 247350.

It is an arithmetic number, because the mean of its divisors is an integer number (1605253).

Almost surely, 2^47720022 is an apocalyptic number.

47720022 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 47720022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57789108).

47720022 is an abundant number, since it is smaller than the sum of its proper divisors (67858194).

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

47720022 is a wasteful number, since it uses less digits than its factorization.

47720022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 47720022 is about 6907.9680080325. The cubic root of 47720022 is about 362.7161377706.

Adding to 47720022 its reverse (22002774), we get a palindrome (69722796).

The spelling of 47720022 in words is "forty-seven million, seven hundred twenty thousand, twenty-two".