91898850 has 48 divisors (see below), whose sum is σ = 231145920. Its totient is φ = 24158400.

The previous prime is 91898837. The next prime is 91898887. The reversal of 91898850 is 5889819.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91898850.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6336 + ... + 14964.

It is an arithmetic number, because the mean of its divisors is an integer number (4815540).

Almost surely, 2^91898850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91898850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115572960).

91898850 is an abundant number, since it is smaller than the sum of its proper divisors (139247070).

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

91898850 is a wasteful number, since it uses less digits than its factorization.

91898850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8715 (or 8710 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 48.

The square root of 91898850 is about 9586.3887882768. The cubic root of 91898850 is about 451.2702382198.

The spelling of 91898850 in words is "ninety-one million, eight hundred ninety-eight thousand, eight hundred fifty".