91070752 has 24 divisors (see below), whose sum is σ = 179891712. Its totient is φ = 45384000.

The previous prime is 91070741. The next prime is 91070753. The reversal of 91070752 is 25707019.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (91070753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5377 + ... + 14527.

It is an arithmetic number, because the mean of its divisors is an integer number (7495488).

Almost surely, 2^91070752 is an apocalyptic number.

It is an amenable number.

91070752 is a deficient number, since it is larger than the sum of its proper divisors (88820960).

91070752 is a wasteful number, since it uses less digits than its factorization.

91070752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9472 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 4410, while the sum is 31.

The square root of 91070752 is about 9543.0997060703. The cubic root of 91070752 is about 449.9106851548.

The spelling of 91070752 in words is "ninety-one million, seventy thousand, seven hundred fifty-two".