91130752 has 16 divisors (see below), whose sum is σ = 181549800. Its totient is φ = 45565312.

The previous prime is 91130729. The next prime is 91130759. The reversal of 91130752 is 25703119.

It is a tau number, because it is divible by the number of its divisors (16).

It is a self number, because there is not a number n which added to its sum of digits gives 91130752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91130759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 355852 + ... + 356107.

Almost surely, 2^91130752 is an apocalyptic number.

It is an amenable number.

91130752 is a deficient number, since it is larger than the sum of its proper divisors (90419048).

91130752 is an equidigital number, since it uses as much as digits as its factorization.

91130752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711973 (or 711961 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 28.

The square root of 91130752 is about 9546.2428211313. The cubic root of 91130752 is about 450.0094681135.

The spelling of 91130752 in words is "ninety-one million, one hundred thirty thousand, seven hundred fifty-two".