47431280 has 80 divisors (see below), whose sum is σ = 120929760. Its totient is φ = 17193984.

The previous prime is 47431273. The next prime is 47431283. The reversal of 47431280 is 8213474.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47431283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60974 + ... + 61746.

It is an arithmetic number, because the mean of its divisors is an integer number (1511622).

Almost surely, 2^47431280 is an apocalyptic number.

47431280 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 47431280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60464880).

47431280 is an abundant number, since it is smaller than the sum of its proper divisors (73498480).

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

47431280 is a wasteful number, since it uses less digits than its factorization.

47431280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858 (or 852 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 47431280 is about 6887.0370987820. The cubic root of 47431280 is about 361.9830888593.

The spelling of 47431280 in words is "forty-seven million, four hundred thirty-one thousand, two hundred eighty".