91417072 has 20 divisors (see below), whose sum is σ = 177316776. Its totient is φ = 45657920.

The previous prime is 91417063. The next prime is 91417087. The reversal of 91417072 is 27071419.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14838 + ... + 20074.

Almost surely, 2^91417072 is an apocalyptic number.

It is an amenable number.

91417072 is a deficient number, since it is larger than the sum of its proper divisors (85899704).

91417072 is a wasteful number, since it uses less digits than its factorization.

91417072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6336 (or 6330 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 91417072 is about 9561.2275362529. The cubic root of 91417072 is about 450.4802642086.

The spelling of 91417072 in words is "ninety-one million, four hundred seventeen thousand, seventy-two".