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2390641385 = 511105141357
BaseRepresentation
bin1000111001111110…
…0100101011101001
320011121102011110112
42032133210223221
514344001011020
61033115424105
7113146054646
oct21637445351
96147364415
102390641385
111017500290
12568755035
132c1390002
14189704dcd
15ded282c5
hex8e7e4ae9

2390641385 has 16 divisors (see below), whose sum is σ = 3132620352. Its totient is φ = 1736952000.

The previous prime is 2390641307. The next prime is 2390641387. The reversal of 2390641385 is 5831460932.

It is not a de Polignac number, because 2390641385 - 218 = 2390379241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2390641387) 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, 37127 + ... + 78483.

It is an arithmetic number, because the mean of its divisors is an integer number (195788772).

Almost surely, 22390641385 is an apocalyptic number.

It is an amenable number.

2390641385 is a deficient number, since it is larger than the sum of its proper divisors (741978967).

2390641385 is a wasteful number, since it uses less digits than its factorization.

2390641385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42424.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 2390641385 is about 48894.1855950173. The cubic root of 2390641385 is about 1337.1233651130.

The spelling of 2390641385 in words is "two billion, three hundred ninety million, six hundred forty-one thousand, three hundred eighty-five".

Divisors: 1 5 11 55 1051 5255 11561 41357 57805 206785 454927 2274635 43466207 217331035 478128277 2390641385