98521380 has 96 divisors (see below), whose sum is σ = 314858880. Its totient is φ = 25557120.

The previous prime is 98521369. The next prime is 98521387. The reversal of 98521380 is 8312589.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (98521387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17515 + ... + 22445.

It is an arithmetic number, because the mean of its divisors is an integer number (3279780).

Almost surely, 2^98521380 is an apocalyptic number.

98521380 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98521380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157429440).

98521380 is an abundant number, since it is smaller than the sum of its proper divisors (216337500).

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

98521380 is a wasteful number, since it uses less digits than its factorization.

98521380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4986 (or 4978 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 98521380 is about 9925.7936710371. The cubic root of 98521380 is about 461.8597989153.

The spelling of 98521380 in words is "ninety-eight million, five hundred twenty-one thousand, three hundred eighty".