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1208315930 = 25122998317
BaseRepresentation
bin100100000000101…
…0111000000011010
310010012122210211212
41020001113000122
54433312102210
6315522223122
741641341653
oct11001270032
93105583755
101208315930
11570076708
122987b4aa2
13163446653
14b669652a
157112e805
hex4805701a

1208315930 has 16 divisors (see below), whose sum is σ = 2176760520. Its totient is φ = 482928192.

The previous prime is 1208315917. The next prime is 1208315951. The reversal of 1208315930 is 395138021.

It can be written as a sum of positive squares in 4 ways, for example, as 1198475161 + 9840769 = 34619^2 + 3137^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36869 + ... + 61448.

Almost surely, 21208315930 is an apocalyptic number.

1208315930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1208315930 is a deficient number, since it is larger than the sum of its proper divisors (968444590).

1208315930 is a wasteful number, since it uses less digits than its factorization.

1208315930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99553.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 1208315930 is about 34760.8390289993. The cubic root of 1208315930 is about 1065.1076411880.

The spelling of 1208315930 in words is "one billion, two hundred eight million, three hundred fifteen thousand, nine hundred thirty".

Divisors: 1 2 5 10 1229 2458 6145 12290 98317 196634 491585 983170 120831593 241663186 604157965 1208315930