385428547 has 8 divisors (see below), whose sum is σ = 463673600. Its totient is φ = 312979464.

The previous prime is 385428493. The next prime is 385428551. The reversal of 385428547 is 745824583.

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

It is a de Polignac number, because none of the positive numbers 2^k-385428547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 385428497 and 385428506.

It is not an unprimeable number, because it can be changed into a prime (385428587) 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, 1448847 + ... + 1449112.

It is an arithmetic number, because the mean of its divisors is an integer number (57959200).

Almost surely, 2^385428547 is an apocalyptic number.

385428547 is a deficient number, since it is larger than the sum of its proper divisors (78245053).

385428547 is a wasteful number, since it uses less digits than its factorization.

385428547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2897985.

The product of its digits is 1075200, while the sum is 46.

The square root of 385428547 is about 19632.3342218902. The cubic root of 385428547 is about 727.7484558178.

It can be divided in two parts, 38542 and 8547, that added together give a square (47089 = 217²).

The spelling of 385428547 in words is "three hundred eighty-five million, four hundred twenty-eight thousand, five hundred forty-seven".