90840016 has 20 divisors (see below), whose sum is σ = 176335812. Its totient is φ = 45334016.

The previous prime is 90839953. The next prime is 90840017. The reversal of 90840016 is 61004809.

It can be written as a sum of positive squares in 2 ways, for example, as 33686416 + 57153600 = 5804^2 + 7560^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90840017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3816 + ... + 14008.

Almost surely, 2^90840016 is an apocalyptic number.

It is an amenable number.

90840016 is a deficient number, since it is larger than the sum of its proper divisors (85495796).

90840016 is a wasteful number, since it uses less digits than its factorization.

90840016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10758 (or 10752 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 90840016 is about 9531.0028853211. The cubic root of 90840016 is about 449.5304006531.

The spelling of 90840016 in words is "ninety million, eight hundred forty thousand, sixteen".