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30845038 = 27172941109
BaseRepresentation
bin111010110101…
…0100001101110
32011001002102211
41311222201232
530344020123
63021041034
7523115140
oct165524156
964032384
1030845038
1116458374
12a3b617a
13650c803
14414cc90
152a9440d
hex1d6a86e

30845038 has 64 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 11612160.

The previous prime is 30845033. The next prime is 30845053. The reversal of 30845038 is 83054803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30845033) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282928 + ... + 283036.

It is an arithmetic number, because the mean of its divisors is an integer number (935550).

Almost surely, 230845038 is an apocalyptic number.

30845038 is a deficient number, since it is larger than the sum of its proper divisors (29030162).

30845038 is a wasteful number, since it uses less digits than its factorization.

30845038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 30845038 is about 5553.8309300878. The cubic root of 30845038 is about 313.6137555464.

The spelling of 30845038 in words is "thirty million, eight hundred forty-five thousand, thirty-eight".

Divisors: 1 2 7 14 17 29 34 41 58 82 109 119 203 218 238 287 406 493 574 697 763 986 1189 1394 1526 1853 2378 3161 3451 3706 4469 4879 6322 6902 8323 8938 9758 12971 16646 20213 22127 25942 31283 40426 44254 53737 62566 75973 107474 129601 141491 151946 259202 282982 376159 531811 752318 907207 1063622 1814414 2203217 4406434 15422519 30845038