47451384 has 24 divisors (see below), whose sum is σ = 128514360. Its totient is φ = 15817104.

The previous prime is 47451361. The next prime is 47451389. The reversal of 47451384 is 48315474.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 (47451389) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 329452 + ... + 329595.

It is an arithmetic number, because the mean of its divisors is an integer number (5354765).

Almost surely, 2^47451384 is an apocalyptic number.

It is an amenable number.

47451384 is an abundant number, since it is smaller than the sum of its proper divisors (81062976).

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

47451384 is a wasteful number, since it uses less digits than its factorization.

47451384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 659059 (or 659052 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 47451384 is about 6888.4964977853. The cubic root of 47451384 is about 362.0342244537.

The spelling of 47451384 in words is "forty-seven million, four hundred fifty-one thousand, three hundred eighty-four".