91204048 has 40 divisors (see below), whose sum is σ = 201502728. Its totient is φ = 39616512.

The previous prime is 91204027. The next prime is 91204063. The reversal of 91204048 is 84040219.

It can be written as a sum of positive squares in 4 ways, for example, as 725904 + 90478144 = 852^2 + 9512^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9361 + ... + 16432.

Almost surely, 2^91204048 is an apocalyptic number.

It is an amenable number.

91204048 is an abundant number, since it is smaller than the sum of its proper divisors (110298680).

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

91204048 is a wasteful number, since it uses less digits than its factorization.

91204048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25831 (or 25825 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 91204048 is about 9550.0810467765. The cubic root of 91204048 is about 450.1300825577.

The spelling of 91204048 in words is "ninety-one million, two hundred four thousand, forty-eight".