47138040 has 96 divisors (see below), whose sum is σ = 159887520. Its totient is φ = 12021504.

The previous prime is 47138009. The next prime is 47138057. The reversal of 47138040 is 4083174.

It is a plaindrome in base 7.

It is a zygodrome in base 7.

It is a junction number, because it is equal to n+sod(n) for n = 47137995 and 47138013.

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, 5434 + ... + 11126.

It is an arithmetic number, because the mean of its divisors is an integer number (1665495).

Almost surely, 2^47138040 is an apocalyptic number.

47138040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47138040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79943760).

47138040 is an abundant number, since it is smaller than the sum of its proper divisors (112749480).

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

47138040 is a wasteful number, since it uses less digits than its factorization.

47138040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5733 (or 5726 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 47138040 is about 6865.7148207597. The cubic root of 47138040 is about 361.2355693201.

The spelling of 47138040 in words is "forty-seven million, one hundred thirty-eight thousand, forty".