98728631 has 4 divisors (see below), whose sum is σ = 100081152. Its totient is φ = 97376112.

The previous prime is 98728601. The next prime is 98728633. The reversal of 98728631 is 13682789.

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

It is a cyclic number.

It is not a de Polignac number, because 98728631 - 2¹⁴ = 98712247 is a prime.

It is a super-2 number, since 2×98728631² = 19494685158268322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98728633) 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 3 ways as a sum of consecutive naturals, for example, 676151 + ... + 676296.

It is an arithmetic number, because the mean of its divisors is an integer number (25020288).

Almost surely, 2^98728631 is an apocalyptic number.

98728631 is a deficient number, since it is larger than the sum of its proper divisors (1352521).

98728631 is a wasteful number, since it uses less digits than its factorization.

98728631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1352520.

The product of its digits is 145152, while the sum is 44.

The square root of 98728631 is about 9936.2282079268. The cubic root of 98728631 is about 462.1834304072.

The spelling of 98728631 in words is "ninety-eight million, seven hundred twenty-eight thousand, six hundred thirty-one".