47731320 has 384 divisors, whose sum is σ = 201277440. Its totient is φ = 9538560.

The previous prime is 47731319. The next prime is 47731331. The reversal of 47731320 is 2313774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1015537 + ... + 1015583.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^47731320 is an apocalyptic number.

47731320 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 47731320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100638720).

47731320 is an abundant number, since it is smaller than the sum of its proper divisors (153546120).

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

47731320 is a wasteful number, since it uses less digits than its factorization.

47731320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 27.

The square root of 47731320 is about 6908.7857109625. The cubic root of 47731320 is about 362.7447605820.

The spelling of 47731320 in words is "forty-seven million, seven hundred thirty-one thousand, three hundred twenty".