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2068138948 = 22648179777
BaseRepresentation
bin111101101000101…
…0100101111000100
312100010120100021211
41323101110233010
513213420421243
6541115221204
7102151614421
oct17321245704
95303510254
102068138948
11971457447
12498747804
1326c613a75
14158954d48
15c1871d9d
hex7b454bc4

2068138948 has 12 divisors (see below), whose sum is σ = 3619846972. Its totient is φ = 1033896960.

The previous prime is 2068138903. The next prime is 2068138951. The reversal of 2068138948 is 8498318602.

It can be written as a sum of positive squares in 2 ways, for example, as 1922647104 + 145491844 = 43848^2 + 12062^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13965 + ... + 65812.

Almost surely, 22068138948 is an apocalyptic number.

It is an amenable number.

2068138948 is a deficient number, since it is larger than the sum of its proper divisors (1551708024).

2068138948 is a wasteful number, since it uses less digits than its factorization.

2068138948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86262 (or 86260 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 49.

The square root of 2068138948 is about 45476.7957094604. The cubic root of 2068138948 is about 1274.0698479006.

The spelling of 2068138948 in words is "two billion, sixty-eight million, one hundred thirty-eight thousand, nine hundred forty-eight".

Divisors: 1 2 4 6481 12962 25924 79777 159554 319108 517034737 1034069474 2068138948