98180640 has 96 divisors (see below), whose sum is σ = 343647360. Its totient is φ = 26180352.

The previous prime is 98180633. The next prime is 98180651. The reversal of 98180640 is 4608189.

It is a happy number.

98180640 is a `hidden beast` number, since 9 + 8 + 1 + 8 + 0 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

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

It is a junction number, because it is equal to n+sod(n) for n = 98180595 and 98180604.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7044 + ... + 15683.

It is an arithmetic number, because the mean of its divisors is an integer number (3579660).

Almost surely, 2^98180640 is an apocalyptic number.

98180640 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

98180640 is an abundant number, since it is smaller than the sum of its proper divisors (245466720).

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

98180640 is a wasteful number, since it uses less digits than its factorization.

98180640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22751 (or 22737 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 98180640 is about 9908.6144339156. The cubic root of 98180640 is about 461.3267305755.

The spelling of 98180640 in words is "ninety-eight million, one hundred eighty thousand, six hundred forty".