90533412 has 72 divisors (see below), whose sum is σ = 237575520. Its totient is φ = 29047680.

The previous prime is 90533411. The next prime is 90533477. The reversal of 90533412 is 21433509.

90533412 is a `hidden beast` number, since 90 + 533 + 41 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90533411) 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 23 ways as a sum of consecutive naturals, for example, 122139 + ... + 122877.

It is an arithmetic number, because the mean of its divisors is an integer number (3299660).

Almost surely, 2^90533412 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90533412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118787760).

90533412 is an abundant number, since it is smaller than the sum of its proper divisors (147042108).

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

90533412 is a wasteful number, since it uses less digits than its factorization.

90533412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 873 (or 868 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 90533412 is about 9514.9047288977. The cubic root of 90533412 is about 449.0240776238.

The spelling of 90533412 in words is "ninety million, five hundred thirty-three thousand, four hundred twelve".