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802031990 = 251916132617
BaseRepresentation
bin101111110011100…
…000100101110110
32001220011110001112
4233303200211312
53120310010430
6211330155022
725606105454
oct5763404566
92056143045
10802031990
113817a9561
121a4722a72
13ca214a56
14787379d4
154a629195
hex2fce0976

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".

Divisors: 1 2 5 10 19 38 95 190 1613 2617 3226 5234 8065 13085 16130 26170 30647 49723 61294 99446 153235 248615 306470 497230 4221221 8442442 21106105 42212210 80203199 160406398 401015995 802031990