98781928 has 16 divisors (see below), whose sum is σ = 211675680. Its totient is φ = 42335088.

The previous prime is 98781923. The next prime is 98781929. The reversal of 98781928 is 82918789.

It is not an unprimeable number, because it can be changed into a prime (98781923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881926 + ... + 882037.

It is an arithmetic number, because the mean of its divisors is an integer number (13229730).

Almost surely, 2^98781928 is an apocalyptic number.

It is an amenable number.

98781928 is an abundant number, since it is smaller than the sum of its proper divisors (112893752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

98781928 is a wasteful number, since it uses less digits than its factorization.

98781928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1763976 (or 1763972 counting only the distinct ones).

The product of its digits is 580608, while the sum is 52.

The square root of 98781928 is about 9938.9097993693. The cubic root of 98781928 is about 462.2665827775.

The spelling of 98781928 in words is "ninety-eight million, seven hundred eighty-one thousand, nine hundred twenty-eight".