802031990 has 32 divisors (see below), whose sum is σ = 1521162720.
Its totient is φ = 303623424.
The previous prime is 802031981. The next prime is 802032053. The reversal of 802031990 is 99130208.
It is a congruent number.
It is an unprimeable number.
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 15 ways as a sum of consecutive naturals, for example, 305162 + ... + 307778.
It is an arithmetic number, because the mean of its divisors is an integer number (47536335).
Almost surely, 2802031990 is an apocalyptic number.
802031990 is a deficient number, since it is larger than the sum of its proper divisors (719130730).
802031990 is a wasteful number, since it uses less digits than its factorization.
802031990 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4256.
The product of its (nonzero) digits is 3888, while the sum is 32.
The square root of 802031990 is about 28320.1693144656.
The cubic root of 802031990 is about 929.1030740483.
The spelling of 802031990 in words is "eight hundred two million, thirty-one thousand, nine hundred ninety".