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290464772 = 221314937489
BaseRepresentation
bin10001010100000…
…010010000000100
3202020120010202112
4101110002100010
51043324333042
644453400152
710124624033
oct2124022004
9666503675
10290464772
11139a61534
1281339058
134823c960
142a81071a
151a778982
hex11502404

290464772 has 24 divisors (see below), whose sum is σ = 551103000. Its totient is φ = 133157376.

The previous prime is 290464753. The next prime is 290464793. The reversal of 290464772 is 277464092.

It can be written as a sum of positive squares in 4 ways, for example, as 16760836 + 273703936 = 4094^2 + 16544^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10997 + ... + 26492.

It is an arithmetic number, because the mean of its divisors is an integer number (22962625).

Almost surely, 2290464772 is an apocalyptic number.

It is an amenable number.

290464772 is a deficient number, since it is larger than the sum of its proper divisors (260638228).

290464772 is a wasteful number, since it uses less digits than its factorization.

290464772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37655 (or 37653 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 41.

The square root of 290464772 is about 17043.0270785445. The cubic root of 290464772 is about 662.2640124013.

It can be divided in two parts, 2904 and 64772, that added together give a palindrome (67676).

The spelling of 290464772 in words is "two hundred ninety million, four hundred sixty-four thousand, seven hundred seventy-two".

Divisors: 1 2 4 13 26 52 149 298 596 1937 3874 7748 37489 74978 149956 487357 974714 1949428 5585861 11171722 22343444 72616193 145232386 290464772