91898880 has 176 divisors, whose sum is σ = 304986624. Its totient is φ = 23592960.

The previous prime is 91898837. The next prime is 91898887. The reversal of 91898880 is 8889819.

It is not an unprimeable number, because it can be changed into a prime (91898887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 476064 + ... + 476256.

Almost surely, 2^91898880 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 91898880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152493312).

91898880 is an abundant number, since it is smaller than the sum of its proper divisors (213087744).

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

91898880 is a wasteful number, since it uses less digits than its factorization.

91898880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 51.

The square root of 91898880 is about 9586.3903529952. The cubic root of 91898880 is about 451.2702873249.

The spelling of 91898880 in words is "ninety-one million, eight hundred ninety-eight thousand, eight hundred eighty".