90002 has 8 divisors (see below), whose sum is σ = 147312. Its totient is φ = 40900.

The previous prime is 90001. The next prime is 90007. The reversal of 90002 is 20009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is not an unprimeable number, because it can be changed into a prime (90001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2024 + ... + 2067.

It is an arithmetic number, because the mean of its divisors is an integer number (18414).

2⁹⁰⁰⁰² is an apocalyptic number.

90002 is a deficient number, since it is larger than the sum of its proper divisors (57310).

90002 is a wasteful number, since it uses less digits than its factorization.

90002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4104.

The product of its (nonzero) digits is 18, while the sum is 11.

The square root of 90002 is about 300.0033333148. The cubic root of 90002 is about 44.8143794190.

Adding to 90002 its reverse (20009), we get a palindrome (110011).

The spelling of 90002 in words is "ninety thousand, two".