98633640 has 128 divisors (see below), whose sum is σ = 349920000. Its totient is φ = 21762048.

The previous prime is 98633593. The next prime is 98633641. The reversal of 98633640 is 4633689.

It is not an unprimeable number, because it can be changed into a prime (98633641) 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, 22336 + ... + 26384.

It is an arithmetic number, because the mean of its divisors is an integer number (2733750).

Almost surely, 2^98633640 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 98633640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174960000).

98633640 is an abundant number, since it is smaller than the sum of its proper divisors (251286360).

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

98633640 is a wasteful number, since it uses less digits than its factorization.

98633640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4099 (or 4095 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 39.

The square root of 98633640 is about 9931.4470244773. The cubic root of 98633640 is about 462.0351540874.

The spelling of 98633640 in words is "ninety-eight million, six hundred thirty-three thousand, six hundred forty".