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8030512690 = 25941385313
BaseRepresentation
bin1110111101010011…
…11110011000110010
3202201122211022102221
413132221332120302
5112421302401230
63404505431254
7403001142304
oct73651763062
922648738387
108030512690
113451019052
12168149b52a
139ac967575
1456276b974
1532002627a
hex1dea7e632

8030512690 has 16 divisors (see below), whose sum is σ = 14456627928. Its totient is φ = 3211826176.

The previous prime is 8030512681. The next prime is 8030512691. The reversal of 8030512690 is 962150308.

It can be written as a sum of positive squares in 4 ways, for example, as 7429233249 + 601279441 = 86193^2 + 24521^2 .

It is a super-2 number, since 2×80305126902 (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8030512691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51474 + ... + 136786.

Almost surely, 28030512690 is an apocalyptic number.

8030512690 is a deficient number, since it is larger than the sum of its proper divisors (6426115238).

8030512690 is a wasteful number, since it uses less digits than its factorization.

8030512690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94733.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 8030512690 is about 89613.1278887195. The cubic root of 8030512690 is about 2002.5394982761.

Adding to 8030512690 its reverse (962150308), we get a palindrome (8992662998).

The spelling of 8030512690 in words is "eight billion, thirty million, five hundred twelve thousand, six hundred ninety".

Divisors: 1 2 5 10 9413 18826 47065 85313 94130 170626 426565 853130 803051269 1606102538 4015256345 8030512690