90142284 has 12 divisors (see below), whose sum is σ = 210332024. Its totient is φ = 30047424.

The previous prime is 90142253. The next prime is 90142303. The reversal of 90142284 is 48224109.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3755917 + ... + 3755940.

Almost surely, 2^90142284 is an apocalyptic number.

It is an amenable number.

90142284 is an abundant number, since it is smaller than the sum of its proper divisors (120189740).

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

90142284 is a wasteful number, since it uses less digits than its factorization.

90142284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7511864 (or 7511862 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 90142284 is about 9494.3290442242. The cubic root of 90142284 is about 448.3765103853.

The spelling of 90142284 in words is "ninety million, one hundred forty-two thousand, two hundred eighty-four".