47428231 has 8 divisors (see below), whose sum is σ = 49582944. Its totient is φ = 45281280.

The previous prime is 47428223. The next prime is 47428259. The reversal of 47428231 is 13282474.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47428231 - 2³ = 47428223 is a prime.

It is a super-2 number, since 2×47428231² = 4498874191578722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47428193 and 47428202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47428201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13135 + ... + 16351.

It is an arithmetic number, because the mean of its divisors is an integer number (6197868).

Almost surely, 2^47428231 is an apocalyptic number.

47428231 is a deficient number, since it is larger than the sum of its proper divisors (2154713).

47428231 is a wasteful number, since it uses less digits than its factorization.

47428231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881.

The product of its digits is 10752, while the sum is 31.

The square root of 47428231 is about 6886.8157373346. The cubic root of 47428231 is about 361.9753323036.

The spelling of 47428231 in words is "forty-seven million, four hundred twenty-eight thousand, two hundred thirty-one".