91143460 has 24 divisors (see below), whose sum is σ = 202660920. Its totient is φ = 34312704.

The previous prime is 91143413. The next prime is 91143473. The reversal of 91143460 is 6434119.

It can be written as a sum of positive squares in 4 ways, for example, as 40220964 + 50922496 = 6342^2 + 7136^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 133695 + ... + 134374.

It is an arithmetic number, because the mean of its divisors is an integer number (8444205).

Almost surely, 2^91143460 is an apocalyptic number.

It is an amenable number.

91143460 is an abundant number, since it is smaller than the sum of its proper divisors (111517460).

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

91143460 is a wasteful number, since it uses less digits than its factorization.

91143460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268095 (or 268093 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 91143460 is about 9546.9084001052. The cubic root of 91143460 is about 450.0303847796.

Adding to 91143460 its reverse (6434119), we get a palindrome (97577579).

The spelling of 91143460 in words is "ninety-one million, one hundred forty-three thousand, four hundred sixty".