90384540 has 48 divisors (see below), whose sum is σ = 254018688. Its totient is φ = 24012864.

The previous prime is 90384533. The next prime is 90384559. The reversal of 90384540 is 4548309.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14319 + ... + 19641.

It is an arithmetic number, because the mean of its divisors is an integer number (5292056).

Almost surely, 2^90384540 is an apocalyptic number.

It is an amenable number.

90384540 is an abundant number, since it is smaller than the sum of its proper divisors (163634148).

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

90384540 is a wasteful number, since it uses less digits than its factorization.

90384540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5618 (or 5616 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 90384540 is about 9507.0784155807. The cubic root of 90384540 is about 448.7778194179. Note that the first 3 decimals are identical.

The spelling of 90384540 in words is "ninety million, three hundred eighty-four thousand, five hundred forty".