Search a number
-
+
129719058 = 23710093061
BaseRepresentation
bin1111011101101…
…01101100010010
3100001002102002120
413232311230102
5231202002213
620512155110
73133410450
oct756655422
9301072076
10129719058
116724a937
1237538a96
1320b4a951
14133299d0
15b5c5423
hex7bb5b12

129719058 has 32 divisors (see below), whose sum is σ = 296891520. Its totient is φ = 37013760.

The previous prime is 129719053. The next prime is 129719119. The reversal of 129719058 is 850917921.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (129719053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40848 + ... + 43908.

It is an arithmetic number, because the mean of its divisors is an integer number (9277860).

Almost surely, 2129719058 is an apocalyptic number.

129719058 is an abundant number, since it is smaller than the sum of its proper divisors (167172462).

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

129719058 is a wasteful number, since it uses less digits than its factorization.

129719058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082.

The product of its (nonzero) digits is 45360, while the sum is 42.

The square root of 129719058 is about 11389.4274658562. The cubic root of 129719058 is about 506.2145168851.

The spelling of 129719058 in words is "one hundred twenty-nine million, seven hundred nineteen thousand, fifty-eight".

Divisors: 1 2 3 6 7 14 21 42 1009 2018 3027 3061 6054 6122 7063 9183 14126 18366 21189 21427 42378 42854 64281 128562 3088549 6177098 9265647 18531294 21619843 43239686 64859529 129719058