91984230 has 96 divisors (see below), whose sum is σ = 266535360. Its totient is φ = 21853440.

The previous prime is 91984213. The next prime is 91984231. The reversal of 91984230 is 3248919.

It is a super-2 number, since 2×91984230² = 16922197137385800, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91984231) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32575 + ... + 35285.

It is an arithmetic number, because the mean of its divisors is an integer number (2776410).

Almost surely, 2^91984230 is an apocalyptic number.

91984230 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 91984230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (133267680).

91984230 is an abundant number, since it is smaller than the sum of its proper divisors (174551130).

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

91984230 is a wasteful number, since it uses less digits than its factorization.

91984230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766 (or 2763 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 91984230 is about 9590.8409433167. The cubic root of 91984230 is about 451.4099480819.

Adding to 91984230 its sum of digits (36), we get a triangular number (91984266 = T₁₃₅₆₃).

The spelling of 91984230 in words is "ninety-one million, nine hundred eighty-four thousand, two hundred thirty".