91798040 has 32 divisors (see below), whose sum is σ = 209634480. Its totient is φ = 36170112.

The previous prime is 91798033. The next prime is 91798051. The reversal of 91798040 is 4089719.

It is a junction number, because it is equal to n+sod(n) for n = 91797985 and 91798003.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14447 + ... + 19806.

Almost surely, 2^91798040 is an apocalyptic number.

It is an amenable number.

91798040 is an abundant number, since it is smaller than the sum of its proper divisors (117836440).

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

91798040 is a wasteful number, since it uses less digits than its factorization.

91798040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34331 (or 34327 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 91798040 is about 9581.1293697559. The cubic root of 91798040 is about 451.1051683360.

The spelling of 91798040 in words is "ninety-one million, seven hundred ninety-eight thousand, forty".