91380536 has 16 divisors (see below), whose sum is σ = 184518600. Its totient is φ = 42175584.

The previous prime is 91380511. The next prime is 91380577. The reversal of 91380536 is 63508319.

It is a junction number, because it is equal to n+sod(n) for n = 91380496 and 91380505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439226 + ... + 439433.

Almost surely, 2^91380536 is an apocalyptic number.

It is an amenable number.

91380536 is an abundant number, since it is smaller than the sum of its proper divisors (93138064).

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

91380536 is a wasteful number, since it uses less digits than its factorization.

91380536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 878678 (or 878674 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 91380536 is about 9559.3167119831. The cubic root of 91380536 is about 450.4202428154.

The spelling of 91380536 in words is "ninety-one million, three hundred eighty thousand, five hundred thirty-six".