47128860 has 72 divisors (see below), whose sum is σ = 146306160. Its totient is φ = 12273408.

The previous prime is 47128859. The next prime is 47128871. The reversal of 47128860 is 6882174.

It is a super-2 number, since 2×47128860² = 4442258889799200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4696 + ... + 10784.

It is an arithmetic number, because the mean of its divisors is an integer number (2032030).

Almost surely, 2^47128860 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 47128860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73153080).

47128860 is an abundant number, since it is smaller than the sum of its proper divisors (99177300).

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

47128860 is a wasteful number, since it uses less digits than its factorization.

47128860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147 (or 6142 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 47128860 is about 6865.0462489338. The cubic root of 47128860 is about 361.2121179292.

The spelling of 47128860 in words is "forty-seven million, one hundred twenty-eight thousand, eight hundred sixty".