91742530 has 16 divisors (see below), whose sum is σ = 180149184. Its totient is φ = 33360880.

The previous prime is 91742509. The next prime is 91742533. The reversal of 91742530 is 3524719.

It is a junction number, because it is equal to n+sod(n) for n = 91742492 and 91742501.

It is not an unprimeable number, because it can be changed into a prime (91742533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 416902 + ... + 417121.

It is an arithmetic number, because the mean of its divisors is an integer number (11259324).

Almost surely, 2^91742530 is an apocalyptic number.

91742530 is a deficient number, since it is larger than the sum of its proper divisors (88406654).

91742530 is a wasteful number, since it uses less digits than its factorization.

91742530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834041.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 91742530 is about 9578.2320915710. The cubic root of 91742530 is about 451.0142226870.

The spelling of 91742530 in words is "ninety-one million, seven hundred forty-two thousand, five hundred thirty".