Search a number
-
+
20070237549 = 341389419467
BaseRepresentation
bin10010101100010001…
…111000010101101101
31220210201200201001110
4102230101320111231
5312100440100144
613115314502233
71310234130045
oct225421702555
956721621043
1020070237549
11856a14258a
123a81594979
131b7b0ca60b
14d8576a725
157c6ee20b9
hex4ac47856d

20070237549 has 16 divisors (see below), whose sum is σ = 27483543360. Its totient is φ = 13020224640.

The previous prime is 20070237533. The next prime is 20070237599. The reversal of 20070237549 is 94573207002.

It is not a de Polignac number, because 20070237549 - 24 = 20070237533 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20070237599) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161887 + ... + 257580.

It is an arithmetic number, because the mean of its divisors is an integer number (1717721460).

Almost surely, 220070237549 is an apocalyptic number.

It is an amenable number.

20070237549 is a deficient number, since it is larger than the sum of its proper divisors (7413305811).

20070237549 is a wasteful number, since it uses less digits than its factorization.

20070237549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419900.

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 20070237549 in words is "twenty billion, seventy million, two hundred thirty-seven thousand, five hundred forty-nine".

Divisors: 1 3 41 123 389 1167 15949 47847 419467 1258401 17198147 51594441 163172663 489517989 6690079183 20070237549