98778834 has 192 divisors, whose sum is σ = 292331520. Its totient is φ = 23522400.

The previous prime is 98778833. The next prime is 98778839. The reversal of 98778834 is 43887789.

Its product of digits (2709504) is a multiple of the sum of its prime factors (98).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98778833) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3186399 + ... + 3186429.

It is an arithmetic number, because the mean of its divisors is an integer number (1522560).

Almost surely, 2^98778834 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98778834, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146165760).

98778834 is an abundant number, since it is smaller than the sum of its proper divisors (193552686).

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

98778834 is a wasteful number, since it uses less digits than its factorization.

98778834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 73 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 98778834 is about 9938.7541472762. The cubic root of 98778834 is about 462.2617564299.

The spelling of 98778834 in words is "ninety-eight million, seven hundred seventy-eight thousand, eight hundred thirty-four".