47031732 has 144 divisors (see below), whose sum is σ = 138532800. Its totient is φ = 13780800.

The previous prime is 47031731. The next prime is 47031737. The reversal of 47031732 is 23713074.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 47031696 and 47031705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47031731) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 770982 + ... + 771042.

Almost surely, 2^47031732 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 47031732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69266400).

47031732 is an abundant number, since it is smaller than the sum of its proper divisors (91501068).

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

47031732 is a wasteful number, since it uses less digits than its factorization.

47031732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155 (or 136 counting only the distinct ones).

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

The square root of 47031732 is about 6857.9685038647. The cubic root of 47031732 is about 360.9638062459.

The spelling of 47031732 in words is "forty-seven million, thirty-one thousand, seven hundred thirty-two".