91672384 has 28 divisors (see below), whose sum is σ = 186833764. Its totient is φ = 44596224.

The previous prime is 91672367. The next prime is 91672409. The reversal of 91672384 is 48327619.

It can be written as a sum of positive squares in 2 ways, for example, as 78712384 + 12960000 = 8872^2 + 3600^2 .

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, 16989 + ... + 21724.

Almost surely, 2^91672384 is an apocalyptic number.

It is an amenable number.

91672384 is an abundant number, since it is smaller than the sum of its proper divisors (95161380).

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

91672384 is a wasteful number, since it uses less digits than its factorization.

91672384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38762 (or 38752 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 91672384 is about 9574.5696509034. The cubic root of 91672384 is about 450.8992454414.

The spelling of 91672384 in words is "ninety-one million, six hundred seventy-two thousand, three hundred eighty-four".