91072474 has 8 divisors (see below), whose sum is σ = 136719360. Its totient is φ = 45499356.

The previous prime is 91072469. The next prime is 91072483. The reversal of 91072474 is 47427019.

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

It is an unprimeable number.

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, 15244 + ... + 20359.

It is an arithmetic number, because the mean of its divisors is an integer number (17089920).

Almost surely, 2^91072474 is an apocalyptic number.

91072474 is a deficient number, since it is larger than the sum of its proper divisors (45646886).

91072474 is a wasteful number, since it uses less digits than its factorization.

91072474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36884.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 91072474 is about 9543.1899279015. The cubic root of 91072474 is about 449.9135208304.

The spelling of 91072474 in words is "ninety-one million, seventy-two thousand, four hundred seventy-four".