91880026 has 8 divisors (see below), whose sum is σ = 157508640. Its totient is φ = 39377148.

The previous prime is 91880021. The next prime is 91880059. The reversal of 91880026 is 62008819.

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

It is a junction number, because it is equal to n+sod(n) for n = 91879973 and 91880000.

It is not an unprimeable number, because it can be changed into a prime (91880021) 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, 3281416 + ... + 3281443.

It is an arithmetic number, because the mean of its divisors is an integer number (19688580).

Almost surely, 2^91880026 is an apocalyptic number.

91880026 is a deficient number, since it is larger than the sum of its proper divisors (65628614).

91880026 is a wasteful number, since it uses less digits than its factorization.

91880026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562868.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 91880026 is about 9585.4069292858. The cubic root of 91880026 is about 451.2394243013.

The spelling of 91880026 in words is "ninety-one million, eight hundred eighty thousand, twenty-six".