98528391 has 24 divisors (see below), whose sum is σ = 155566320. Its totient is φ = 59723136.

The previous prime is 98528383. The next prime is 98528393. The reversal of 98528391 is 19382589.

It is a happy number.

98528391 is a `hidden beast` number, since 98 + 528 + 39 + 1 = 666.

It is not a de Polignac number, because 98528391 - 2³ = 98528383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98528393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1555 + ... + 14123.

It is an arithmetic number, because the mean of its divisors is an integer number (6481930).

Almost surely, 2^98528391 is an apocalyptic number.

98528391 is a deficient number, since it is larger than the sum of its proper divisors (57037929).

98528391 is a wasteful number, since it uses less digits than its factorization.

98528391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12655 (or 12652 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 98528391 is about 9926.1468355047. The cubic root of 98528391 is about 461.8707543115.

The spelling of 98528391 in words is "ninety-eight million, five hundred twenty-eight thousand, three hundred ninety-one".