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1000100008 = 23125012501
BaseRepresentation
bin111011100111000…
…101000010101000
32120200212100022001
4323213011002220
54022011200013
6243123340344
733532465315
oct7347050250
92520770261
101000100008
11473591a36
1223ab216b4
1312c27386b
1496b75d0c
155cc00ddd
hex3b9c50a8

1000100008 has 8 divisors (see below), whose sum is σ = 1875187530. Its totient is φ = 500050000.

The previous prime is 1000099999. The next prime is 1000100009. The reversal of 1000100008 is 8000010001.

It can be written as a sum of positive squares in only one way, i.e., 919423684 + 80676324 = 30322^2 + 8982^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 1000099967 and 1000100003.

It is not an unprimeable number, because it can be changed into a prime (1000100009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62506243 + ... + 62506258.

Almost surely, 21000100008 is an apocalyptic number.

It is an amenable number.

1000100008 is a deficient number, since it is larger than the sum of its proper divisors (875087522).

1000100008 is a wasteful number, since it uses less digits than its factorization.

1000100008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125012507 (or 125012503 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1000100008 is about 31624.3578274722. The cubic root of 1000100008 is about 1000.0333348888.

Adding to 1000100008 its reverse (8000010001), we get a palindrome (9000110009).

The spelling of 1000100008 in words is "one billion, one hundred thousand, eight".

Divisors: 1 2 4 8 125012501 250025002 500050004 1000100008