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2928390015 = 35238488087
BaseRepresentation
bin1010111010001011…
…1010111101111111
321120002021121220110
42232202322331333
521444131440030
61202325321103
7132365622135
oct25642727577
97502247813
102928390015
111272aaa841
12698866193
13378900c75
141dacc5755
1512214b1b0
hexae8baf7f

2928390015 has 16 divisors (see below), whose sum is σ = 4889138688. Its totient is φ = 1493903136.

The previous prime is 2928390007. The next prime is 2928390019. The reversal of 2928390015 is 5100938292.

It is not a de Polignac number, because 2928390015 - 23 = 2928390007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2928390019) 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, 4243699 + ... + 4244388.

It is an arithmetic number, because the mean of its divisors is an integer number (305571168).

Almost surely, 22928390015 is an apocalyptic number.

2928390015 is a deficient number, since it is larger than the sum of its proper divisors (1960748673).

2928390015 is a wasteful number, since it uses less digits than its factorization.

2928390015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8488118.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 2928390015 is about 54114.6007561730. The cubic root of 2928390015 is about 1430.6815365075.

The spelling of 2928390015 in words is "two billion, nine hundred twenty-eight million, three hundred ninety thousand, fifteen".

Divisors: 1 3 5 15 23 69 115 345 8488087 25464261 42440435 127321305 195226001 585678003 976130005 2928390015