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7690031994 = 2319471435243
BaseRepresentation
bin1110010100101110…
…01001001101111010
3201211221011002201210
413022113021031322
5111222122010434
63311024023550
7361365123231
oct71227111572
921757132653
107690031994
113296905947
1215a7461bb6
139572651b8
1452d45bb18
153001bcee9
hex1ca5c937a

7690031994 has 32 divisors (see below), whose sum is σ = 16534010880. Its totient is φ = 2376760752.

The previous prime is 7690031981. The next prime is 7690032017. The reversal of 7690031994 is 4991300967.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712264 + ... + 722979.

It is an arithmetic number, because the mean of its divisors is an integer number (516687840).

Almost surely, 27690031994 is an apocalyptic number.

7690031994 is an abundant number, since it is smaller than the sum of its proper divisors (8843978886).

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

7690031994 is a wasteful number, since it uses less digits than its factorization.

7690031994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435314.

The product of its (nonzero) digits is 367416, while the sum is 48.

The square root of 7690031994 is about 87692.8274946133. The cubic root of 7690031994 is about 1973.8283490441.

The spelling of 7690031994 in words is "seven billion, six hundred ninety million, thirty-one thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 19 38 47 57 94 114 141 282 893 1786 2679 5358 1435243 2870486 4305729 8611458 27269617 54539234 67456421 81808851 134912842 163617702 202369263 404738526 1281671999 2563343998 3845015997 7690031994