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13159990 = 259713567
BaseRepresentation
bin110010001100…
…111000110110
3220202121010001
4302030320312
511332104430
61150021514
7216600214
oct62147066
926677101
1013159990
117479328
1244a789a
132959c9c
141a67cb4
15124e3ca
hexc8ce36

13159990 has 16 divisors (see below), whose sum is σ = 23933952. Its totient is φ = 5209344.

The previous prime is 13159987. The next prime is 13159999. The reversal of 13159990 is 9995131.

13159990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13159999) 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, 5814 + ... + 7753.

It is an arithmetic number, because the mean of its divisors is an integer number (1495872).

Almost surely, 213159990 is an apocalyptic number.

13159990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13159990 is a deficient number, since it is larger than the sum of its proper divisors (10773962).

13159990 is a wasteful number, since it uses less digits than its factorization.

13159990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13671.

The product of its (nonzero) digits is 10935, while the sum is 37.

The square root of 13159990 is about 3627.6700511485. The cubic root of 13159990 is about 236.0941284005.

The spelling of 13159990 in words is "thirteen million, one hundred fifty-nine thousand, nine hundred ninety".

Divisors: 1 2 5 10 97 194 485 970 13567 27134 67835 135670 1315999 2631998 6579995 13159990