98309640 has 256 divisors, whose sum is σ = 367960320. Its totient is φ = 20643840.

The previous prime is 98309639. The next prime is 98309669. The reversal of 98309640 is 4690389.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291552 + ... + 291888.

It is an arithmetic number, because the mean of its divisors is an integer number (1437345).

Almost surely, 2^98309640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98309640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183980160).

98309640 is an abundant number, since it is smaller than the sum of its proper divisors (269650680).

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

98309640 is a wasteful number, since it uses less digits than its factorization.

98309640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 98309640 is about 9915.1217844260. The cubic root of 98309640 is about 461.5286885965.

The spelling of 98309640 in words is "ninety-eight million, three hundred nine thousand, six hundred forty".