90888012 has 18 divisors (see below), whose sum is σ = 229744788. Its totient is φ = 30295992.

The previous prime is 90888011. The next prime is 90888029. The reversal of 90888012 is 21088809.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2524667 = 90888012 / (9 + 0 + 8 + 8 + 8 + 0 + 1 + 2).

It is not an unprimeable number, because it can be changed into a prime (90888011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262298 + ... + 1262369.

Almost surely, 2^90888012 is an apocalyptic number.

It is an amenable number.

90888012 is an abundant number, since it is smaller than the sum of its proper divisors (138856776).

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

90888012 is a wasteful number, since it uses less digits than its factorization.

90888012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524677 (or 2524672 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 90888012 is about 9533.5204410543. The cubic root of 90888012 is about 449.6095576271.

The spelling of 90888012 in words is "ninety million, eight hundred eighty-eight thousand, twelve".