99857648 has 40 divisors (see below), whose sum is σ = 212972976. Its totient is φ = 44979200.

The previous prime is 99857647. The next prime is 99857663. The reversal of 99857648 is 84675899.

It is a junction number, because it is equal to n+sod(n) for n = 99857593 and 99857602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99857647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17378 + ... + 22398.

Almost surely, 2^99857648 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 99857648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106486488).

99857648 is an abundant number, since it is smaller than the sum of its proper divisors (113115328).

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

99857648 is a wasteful number, since it uses less digits than its factorization.

99857648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5153 (or 5147 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 56.

The square root of 99857648 is about 9992.8798651840. The cubic root of 99857648 is about 463.9385322856.

The spelling of 99857648 in words is "ninety-nine million, eight hundred fifty-seven thousand, six hundred forty-eight".