Search a number
-
+
1028496238 = 271131972221
BaseRepresentation
bin111101010011011…
…001101101101110
32122200022000121021
4331103121231232
54101243334423
6250020124354
734326034210
oct7523315556
92580260537
101028496238
114886174a0
122485366ba
13135106873
149a8485b0
156045e95d
hex3d4d9b6e

1028496238 has 64 divisors (see below), whose sum is σ = 2006839296. Its totient is φ = 383616000.

The previous prime is 1028496229. The next prime is 1028496241. The reversal of 1028496238 is 8326948201.

It is a junction number, because it is equal to n+sod(n) for n = 1028496194 and 1028496203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 461968 + ... + 464188.

It is an arithmetic number, because the mean of its divisors is an integer number (31356864).

Almost surely, 21028496238 is an apocalyptic number.

1028496238 is a deficient number, since it is larger than the sum of its proper divisors (978343058).

1028496238 is a wasteful number, since it uses less digits than its factorization.

1028496238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2369.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1028496238 is about 32070.1767690794. The cubic root of 1028496238 is about 1009.4099216359.

The spelling of 1028496238 in words is "one billion, twenty-eight million, four hundred ninety-six thousand, two hundred thirty-eight".

Divisors: 1 2 7 11 14 22 31 62 77 97 154 194 217 341 434 679 682 1067 1358 2134 2221 2387 3007 4442 4774 6014 7469 14938 15547 21049 24431 31094 33077 42098 48862 66154 68851 137702 171017 215437 231539 342034 430874 463078 481957 757361 963914 1508059 1514722 2369807 3016118 4739614 5301527 6678547 10603054 13357094 16588649 33177298 46749829 73464017 93499658 146928034 514248119 1028496238