47428681 has 4 divisors (see below), whose sum is σ = 47790864. Its totient is φ = 47066500.

The previous prime is 47428679. The next prime is 47428721. The reversal of 47428681 is 18682474.

47428681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47428681 - 2¹ = 47428679 is a prime.

It is a super-2 number, since 2×47428681² = 4498959562799522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47428621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180895 + ... + 181156.

It is an arithmetic number, because the mean of its divisors is an integer number (11947716).

Almost surely, 2^47428681 is an apocalyptic number.

It is an amenable number.

47428681 is a deficient number, since it is larger than the sum of its proper divisors (362183).

47428681 is a wasteful number, since it uses less digits than its factorization.

47428681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362182.

The product of its digits is 86016, while the sum is 40.

The square root of 47428681 is about 6886.8484083796. The cubic root of 47428681 is about 361.9764771097.

The spelling of 47428681 in words is "forty-seven million, four hundred twenty-eight thousand, six hundred eighty-one".