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2890938915 = 32564243087
BaseRepresentation
bin1010110001010000…
…0011101000100011
321110110210220122200
42230110003220203
521410040021130
61154510504243
7131432401224
oct25424035043
97413726580
102890938915
111253950217
12688205083
13370c1a657
141d5d3724b
1511dbee760
hexac503a23

2890938915 has 12 divisors (see below), whose sum is σ = 5010960864. Its totient is φ = 1541834064.

The previous prime is 2890938913. The next prime is 2890938917. The reversal of 2890938915 is 5198390982.

It is an interprime number because it is at equal distance from previous prime (2890938913) and next prime (2890938917).

It is not a de Polignac number, because 2890938915 - 21 = 2890938913 is a prime.

It is a super-2 number, since 2×28909389152 = 16715055620522754450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2890938913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32121499 + ... + 32121588.

It is an arithmetic number, because the mean of its divisors is an integer number (417580072).

Almost surely, 22890938915 is an apocalyptic number.

2890938915 is a deficient number, since it is larger than the sum of its proper divisors (2120021949).

2890938915 is a wasteful number, since it uses less digits than its factorization.

2890938915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64243098 (or 64243095 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 54.

The square root of 2890938915 is about 53767.4521899634. The cubic root of 2890938915 is about 1424.5563679043.

The spelling of 2890938915 in words is "two billion, eight hundred ninety million, nine hundred thirty-eight thousand, nine hundred fifteen".

Divisors: 1 3 5 9 15 45 64243087 192729261 321215435 578187783 963646305 2890938915