98878590 has 32 divisors (see below), whose sum is σ = 263676960. Its totient is φ = 26367552.

The previous prime is 98878567. The next prime is 98878597. The reversal of 98878590 is 9587889.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (98878597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182839 + ... + 183378.

It is an arithmetic number, because the mean of its divisors is an integer number (8239905).

Almost surely, 2^98878590 is an apocalyptic number.

98878590 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

98878590 is an abundant number, since it is smaller than the sum of its proper divisors (164798370).

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

98878590 is a wasteful number, since it uses less digits than its factorization.

98878590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366233 (or 366227 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 98878590 is about 9943.7714173245. The cubic root of 98878590 is about 462.4173156303.

The spelling of 98878590 in words is "ninety-eight million, eight hundred seventy-eight thousand, five hundred ninety".