90145384 has 16 divisors (see below), whose sum is σ = 193168800. Its totient is φ = 38633712.

The previous prime is 90145379. The next prime is 90145409. The reversal of 90145384 is 48354109.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 804814 + ... + 804925.

It is an arithmetic number, because the mean of its divisors is an integer number (12073050).

Almost surely, 2^90145384 is an apocalyptic number.

It is an amenable number.

90145384 is an abundant number, since it is smaller than the sum of its proper divisors (103023416).

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

90145384 is a wasteful number, since it uses less digits than its factorization.

90145384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609752 (or 1609748 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 90145384 is about 9494.4922981695. The cubic root of 90145384 is about 448.3816502271.

The spelling of 90145384 in words is "ninety million, one hundred forty-five thousand, three hundred eighty-four".