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804660490 = 251731179853
BaseRepresentation
bin101111111101100…
…010010100001010
32002002002222200101
4233331202110022
53121443113430
6211502400014
725640333644
oct5775422412
92062088611
10804660490
11383234377
121a559000a
13ca92528a
1478c1d894
154a997dca
hex2ff6250a

804660490 has 64 divisors (see below), whose sum is σ = 1593768960. Its totient is φ = 291179520.

The previous prime is 804660463. The next prime is 804660491. The reversal of 804660490 is 94066408.

It is not an unprimeable number, because it can be changed into a prime (804660491) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 942904 + ... + 943756.

It is an arithmetic number, because the mean of its divisors is an integer number (24902640).

Almost surely, 2804660490 is an apocalyptic number.

804660490 is a deficient number, since it is larger than the sum of its proper divisors (789108470).

804660490 is a wasteful number, since it uses less digits than its factorization.

804660490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 804660490 is about 28366.5382096582. The cubic root of 804660490 is about 930.1169506449.

The spelling of 804660490 in words is "eight hundred four million, six hundred sixty thousand, four hundred ninety".

Divisors: 1 2 5 10 17 31 34 62 85 155 170 179 310 358 527 853 895 1054 1706 1790 2635 3043 4265 5270 5549 6086 8530 11098 14501 15215 26443 27745 29002 30430 52886 55490 72505 94333 132215 145010 152687 188666 264430 305374 449531 471665 763435 899062 943330 1526870 2247655 2595679 4495310 4733297 5191358 9466594 12978395 23666485 25956790 47332970 80466049 160932098 402330245 804660490