385528642 has 4 divisors (see below), whose sum is σ = 578292966. Its totient is φ = 192764320.

The previous prime is 385528631. The next prime is 385528667. The reversal of 385528642 is 246825583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 240591121 + 144937521 = 15511^2 + 12039^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 96382159 + ... + 96382162.

Almost surely, 2^385528642 is an apocalyptic number.

385528642 is a deficient number, since it is larger than the sum of its proper divisors (192764324).

385528642 is a wasteful number, since it uses less digits than its factorization.

385528642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192764323.

The product of its digits is 460800, while the sum is 43.

The square root of 385528642 is about 19634.8832947894. The cubic root of 385528642 is about 727.8114486236.

The spelling of 385528642 in words is "three hundred eighty-five million, five hundred twenty-eight thousand, six hundred forty-two".