91052340 has 144 divisors (see below), whose sum is σ = 278510400. Its totient is φ = 22212608.

The previous prime is 91052329. The next prime is 91052359. The reversal of 91052340 is 4325019.

It is a self number, because there is not a number n which added to its sum of digits gives 91052340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1023016 + ... + 1023104.

It is an arithmetic number, because the mean of its divisors is an integer number (1934100).

Almost surely, 2^91052340 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 91052340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139255200).

91052340 is an abundant number, since it is smaller than the sum of its proper divisors (187458060).

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

91052340 is a wasteful number, since it uses less digits than its factorization.

91052340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 175 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 91052340 is about 9542.1349812293. The cubic root of 91052340 is about 449.8803632580.

Adding to 91052340 its reverse (4325019), we get a palindrome (95377359).

The spelling of 91052340 in words is "ninety-one million, fifty-two thousand, three hundred forty".