90013784 has 24 divisors (see below), whose sum is σ = 196331940. Its totient is φ = 38577168.

The previous prime is 90013747. The next prime is 90013787. The reversal of 90013784 is 48731009.

It is a self number, because there is not a number n which added to its sum of digits gives 90013784.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90013787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 114422 + ... + 115205.

Almost surely, 2^90013784 is an apocalyptic number.

It is an amenable number.

90013784 is an abundant number, since it is smaller than the sum of its proper divisors (106318156).

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

90013784 is a wasteful number, since it uses less digits than its factorization.

90013784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229647 (or 229636 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 90013784 is about 9487.5594332789. The cubic root of 90013784 is about 448.1633518890.

The spelling of 90013784 in words is "ninety million, thirteen thousand, seven hundred eighty-four".