98781228 has 288 divisors, whose sum is σ = 346841600. Its totient is φ = 23607936.

The previous prime is 98781197. The next prime is 98781233. The reversal of 98781228 is 82218789.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4294825 + ... + 4294847.

Almost surely, 2^98781228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98781228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173420800).

98781228 is an abundant number, since it is smaller than the sum of its proper divisors (248060372).

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

98781228 is a wasteful number, since it uses less digits than its factorization.

98781228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 67 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 98781228 is about 9938.8745841770. The cubic root of 98781228 is about 462.2654908525.

It can be divided in two parts, 987 and 81228, that added together give a triangular number (82215 = T₄₀₅).

The spelling of 98781228 in words is "ninety-eight million, seven hundred eighty-one thousand, two hundred twenty-eight".