91841072 has 20 divisors (see below), whose sum is σ = 188409816. Its totient is φ = 43219200.

The previous prime is 91841063. The next prime is 91841119. The reversal of 91841072 is 27014819.

It is a super-2 number, since 2×91841072² = 16869565012218368, which contains 22 as substring.

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, 168554 + ... + 169097.

Almost surely, 2^91841072 is an apocalyptic number.

It is an amenable number.

91841072 is an abundant number, since it is smaller than the sum of its proper divisors (96568744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91841072 is a wasteful number, since it uses less digits than its factorization.

91841072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337676 (or 337670 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 91841072 is about 9583.3747709249. The cubic root of 91841072 is about 451.1756452407.

The spelling of 91841072 in words is "ninety-one million, eight hundred forty-one thousand, seventy-two".