47428691 has 16 divisors (see below), whose sum is σ = 52964928. Its totient is φ = 42240000.

The previous prime is 47428679. The next prime is 47428721. The reversal of 47428691 is 19682474.

It is a cyclic number.

It is not a de Polignac number, because 47428691 - 2⁶ = 47428627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47428621) 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, 38891 + ... + 40091.

It is an arithmetic number, because the mean of its divisors is an integer number (3310308).

Almost surely, 2^47428691 is an apocalyptic number.

47428691 is a deficient number, since it is larger than the sum of its proper divisors (5536237).

47428691 is a wasteful number, since it uses less digits than its factorization.

47428691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342.

The product of its digits is 96768, while the sum is 41.

The square root of 47428691 is about 6886.8491344010. The cubic root of 47428691 is about 361.9765025498.

The spelling of 47428691 in words is "forty-seven million, four hundred twenty-eight thousand, six hundred ninety-one".