91074272 has 12 divisors (see below), whose sum is σ = 179302536. Its totient is φ = 45537120.

The previous prime is 91074251. The next prime is 91074283. The reversal of 91074272 is 27247019.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 2846071 = 91074272 / (9 + 1 + 0 + 7 + 4 + 2 + 7 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1423004 + ... + 1423067.

It is an arithmetic number, because the mean of its divisors is an integer number (14941878).

Almost surely, 2^91074272 is an apocalyptic number.

It is an amenable number.

91074272 is a deficient number, since it is larger than the sum of its proper divisors (88228264).

91074272 is a wasteful number, since it uses less digits than its factorization.

91074272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2846081 (or 2846073 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 91074272 is about 9543.2841307382. The cubic root of 91074272 is about 449.9164816196.

The spelling of 91074272 in words is "ninety-one million, seventy-four thousand, two hundred seventy-two".