91473340 has 48 divisors (see below), whose sum is σ = 220437504. Its totient is φ = 31233600.

The previous prime is 91473331. The next prime is 91473367. The reversal of 91473340 is 4337419.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36735 + ... + 39145.

It is an arithmetic number, because the mean of its divisors is an integer number (4592448).

Almost surely, 2^91473340 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 91473340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110218752).

91473340 is an abundant number, since it is smaller than the sum of its proper divisors (128964164).

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

91473340 is a wasteful number, since it uses less digits than its factorization.

91473340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2698 (or 2696 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 91473340 is about 9564.1695928084. The cubic root of 91473340 is about 450.5726700877.

The spelling of 91473340 in words is "ninety-one million, four hundred seventy-three thousand, three hundred forty".