90881888 has 12 divisors (see below), whose sum is σ = 178923780. Its totient is φ = 45440928.

The previous prime is 90881873. The next prime is 90881891. The reversal of 90881888 is 88818809.

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, 1419998 + ... + 1420061.

It is an arithmetic number, because the mean of its divisors is an integer number (14910315).

Almost surely, 2^90881888 is an apocalyptic number.

It is an amenable number.

90881888 is a deficient number, since it is larger than the sum of its proper divisors (88041892).

90881888 is a wasteful number, since it uses less digits than its factorization.

90881888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2840069 (or 2840061 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 50.

The square root of 90881888 is about 9533.1992531364. The cubic root of 90881888 is about 449.5994592261.

The spelling of 90881888 in words is "ninety million, eight hundred eighty-one thousand, eight hundred eighty-eight".