47991060 has 72 divisors (see below), whose sum is σ = 156778440. Its totient is φ = 11812608.

The previous prime is 47991037. The next prime is 47991061. The reversal of 47991060 is 6019974.

It can be written as a sum of positive squares in 4 ways, for example, as 49284 + 47941776 = 222^2 + 6924^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47991061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7915 + ... + 12594.

Almost surely, 2^47991060 is an apocalyptic number.

It is an amenable number.

47991060 is an abundant number, since it is smaller than the sum of its proper divisors (108787380).

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

47991060 is a wasteful number, since it uses less digits than its factorization.

47991060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20537 (or 20532 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 47991060 is about 6927.5580113053. The cubic root of 47991060 is about 363.4015545848.

The spelling of 47991060 in words is "forty-seven million, nine hundred ninety-one thousand, sixty".