47704440 has 256 divisors, whose sum is σ = 178560000. Its totient is φ = 10160640.

The previous prime is 47704439. The next prime is 47704441. The reversal of 47704440 is 4440774.

It is an interprime number because it is at equal distance from previous prime (47704439) and next prime (47704441).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 47704398 and 47704407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47704441) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 782010 + ... + 782070.

It is an arithmetic number, because the mean of its divisors is an integer number (697500).

Almost surely, 2^47704440 is an apocalyptic number.

47704440 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 47704440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89280000).

47704440 is an abundant number, since it is smaller than the sum of its proper divisors (130855560).

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

47704440 is a wasteful number, since it uses less digits than its factorization.

47704440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 30.

The square root of 47704440 is about 6906.8400879129. The cubic root of 47704440 is about 362.6766542869.

The spelling of 47704440 in words is "forty-seven million, seven hundred four thousand, four hundred forty".