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7042378644 = 22327167167341
BaseRepresentation
bin1101000111100001…
…00010101110010100
3200011210110220100200
412203300202232110
5103410322104034
63122450340500
7336342142110
oct64360425624
920153426320
107042378644
112a9426a344
12144658a730
13883023372
144ab42c740
152b33daa99
hex1a3c22b94

7042378644 has 72 divisors (see below), whose sum is σ = 20466595968. Its totient is φ = 2000047680.

The previous prime is 7042378613. The next prime is 7042378649. The reversal of 7042378644 is 4468732407.

It is a self number, because there is not a number n which added to its sum of digits gives 7042378644.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7042378649) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41587 + ... + 125754.

Almost surely, 27042378644 is an apocalyptic number.

It is an amenable number.

7042378644 is an abundant number, since it is smaller than the sum of its proper divisors (13424217324).

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

7042378644 is a wasteful number, since it uses less digits than its factorization.

7042378644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167525 (or 167520 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 45.

The square root of 7042378644 is about 83918.8813319148. The cubic root of 7042378644 is about 1916.7837723466.

The spelling of 7042378644 in words is "seven billion, forty-two million, three hundred seventy-eight thousand, six hundred forty-four".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 28 36 42 63 84 126 167 252 334 501 668 1002 1169 1503 2004 2338 3006 3507 4676 6012 7014 10521 14028 21042 42084 167341 334682 502023 669364 1004046 1171387 1506069 2008092 2342774 3012138 3514161 4685548 6024276 7028322 10542483 14056644 21084966 27945947 42169932 55891894 83837841 111783788 167675682 195621629 251513523 335351364 391243258 503027046 586864887 782486516 1006054092 1173729774 1760594661 2347459548 3521189322 7042378644