528231772 has 6 divisors (see below), whose sum is σ = 924405608. Its totient is φ = 264115884.

The previous prime is 528231763. The next prime is 528231773. The reversal of 528231772 is 277132825.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (528231773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66028968 + ... + 66028975.

Almost surely, 2^528231772 is an apocalyptic number.

It is an amenable number.

528231772 is a deficient number, since it is larger than the sum of its proper divisors (396173836).

528231772 is a wasteful number, since it uses less digits than its factorization.

528231772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132057947 (or 132057945 counting only the distinct ones).

The product of its digits is 47040, while the sum is 37.

The square root of 528231772 is about 22983.2933236297. The cubic root of 528231772 is about 808.3662502437.

The spelling of 528231772 in words is "five hundred twenty-eight million, two hundred thirty-one thousand, seven hundred seventy-two".