802134090 has 40 divisors (see below), whose sum is σ = 2156851620. Its totient is φ = 213902208.

The previous prime is 802134089. The next prime is 802134097. The reversal of 802134090 is 90431208.

It can be written as a sum of positive squares in 2 ways, for example, as 771895089 + 30239001 = 27783^2 + 5499^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (802134097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 494335 + ... + 495954.

Almost surely, 2^802134090 is an apocalyptic number.

802134090 is an abundant number, since it is smaller than the sum of its proper divisors (1354717530).

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

802134090 is a wasteful number, since it uses less digits than its factorization.

802134090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990308 (or 990299 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 802134090 is about 28321.9718593180. The cubic root of 802134090 is about 929.1424978285.

Adding to 802134090 its reverse (90431208), we get a palindrome (892565298).

The spelling of 802134090 in words is "eight hundred two million, one hundred thirty-four thousand, ninety".