91880534 has 8 divisors (see below), whose sum is σ = 139241928. Its totient is φ = 45466560.

The previous prime is 91880533. The next prime is 91880567. The reversal of 91880534 is 43508819.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91880533) by changing a digit.

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, 236612 + ... + 236999.

It is an arithmetic number, because the mean of its divisors is an integer number (17405241).

Almost surely, 2^91880534 is an apocalyptic number.

91880534 is a deficient number, since it is larger than the sum of its proper divisors (47361394).

91880534 is a wasteful number, since it uses less digits than its factorization.

91880534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473710.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 91880534 is about 9585.4334278633. The cubic root of 91880534 is about 451.2402559264.

The spelling of 91880534 in words is "ninety-one million, eight hundred eighty thousand, five hundred thirty-four".