91748742 has 8 divisors (see below), whose sum is σ = 183497496. Its totient is φ = 30582912.

The previous prime is 91748729. The next prime is 91748753. The reversal of 91748742 is 24784719.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

91748742 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 91748694 and 91748703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7645723 + ... + 7645734.

It is an arithmetic number, because the mean of its divisors is an integer number (22937187).

Almost surely, 2^91748742 is an apocalyptic number.

91748742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91748742 is a wasteful number, since it uses less digits than its factorization.

91748742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15291462.

The product of its digits is 112896, while the sum is 42.

The square root of 91748742 is about 9578.5563630434. The cubic root of 91748742 is about 451.0244020340.

It can be divided in two parts, 9174 and 8742, that multiplied together give a palindrome (80199108).

The spelling of 91748742 in words is "ninety-one million, seven hundred forty-eight thousand, seven hundred forty-two".