98515890 has 96 divisors (see below), whose sum is σ = 281428992. Its totient is φ = 23712000.

The previous prime is 98515889. The next prime is 98515891. The reversal of 98515890 is 9851589.

It is an interprime number because it is at equal distance from previous prime (98515889) and next prime (98515891).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (98515891) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 188830 + ... + 189350.

It is an arithmetic number, because the mean of its divisors is an integer number (2931552).

Almost surely, 2^98515890 is an apocalyptic number.

98515890 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 98515890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140714496).

98515890 is an abundant number, since it is smaller than the sum of its proper divisors (182913102).

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

98515890 is a wasteful number, since it uses less digits than its factorization.

98515890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 733 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 45.

The square root of 98515890 is about 9925.5171149920. The cubic root of 98515890 is about 461.8512198726.

The spelling of 98515890 in words is "ninety-eight million, five hundred fifteen thousand, eight hundred ninety".