91617848 has 48 divisors (see below), whose sum is σ = 210364200. Its totient is φ = 37195200.

The previous prime is 91617797. The next prime is 91617857. The reversal of 91617848 is 84871619.

It is a super-2 number, since 2×91617848² = 16787660144302208, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 91617799 and 91617808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1298 + ... + 13598.

Almost surely, 2^91617848 is an apocalyptic number.

91617848 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91617848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105182100).

91617848 is an abundant number, since it is smaller than the sum of its proper divisors (118746352).

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

91617848 is a wasteful number, since it uses less digits than its factorization.

91617848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12340 (or 12329 counting only the distinct ones).

The product of its digits is 96768, while the sum is 44.

The square root of 91617848 is about 9571.7212663136. The cubic root of 91617848 is about 450.8098142225.

The spelling of 91617848 in words is "ninety-one million, six hundred seventeen thousand, eight hundred forty-eight".