902090 has 32 divisors (see below), whose sum is σ = 1900800. Its totient is φ = 308112.

The previous prime is 902089. The next prime is 902119. The reversal of 902090 is 90209.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3299 + ... + 3561.

It is an arithmetic number, because the mean of its divisors is an integer number (59400).

2⁹⁰²⁰⁹⁰ is an apocalyptic number.

902090 is an abundant number, since it is smaller than the sum of its proper divisors (998710).

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

902090 is a wasteful number, since it uses less digits than its factorization.

902090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 902090 is about 949.7841860128. The cubic root of 902090 is about 96.6236167140.

Adding to 902090 its reverse (90209), we get a palindrome (992299).

The spelling of 902090 in words is "nine hundred two thousand, ninety".