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30251274386 = 253674259543
BaseRepresentation
bin11100001011000111…
…011101000010010010
32220002021002222000212
4130023013131002102
5443423311240021
621521445444122
72120440406144
oct341307350222
986067088025
1030251274386
1111914068213
125a43110642
132b11462878
14166d976c94
15bc0c1085b
hex70b1dd092

30251274386 has 16 divisors (see below), whose sum is σ = 46923136704. Its totient is φ = 14618748144.

The previous prime is 30251274349. The next prime is 30251274413. The reversal of 30251274386 is 68347215203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122670 + ... + 2136873.

It is an arithmetic number, because the mean of its divisors is an integer number (2932696044).

Almost surely, 230251274386 is an apocalyptic number.

30251274386 is a deficient number, since it is larger than the sum of its proper divisors (16671862318).

30251274386 is a wasteful number, since it uses less digits than its factorization.

30251274386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4259665.

The product of its (nonzero) digits is 241920, while the sum is 41.

Adding to 30251274386 its reverse (68347215203), we get a palindrome (98598489589).

The spelling of 30251274386 in words is "thirty billion, two hundred fifty-one million, two hundred seventy-four thousand, three hundred eighty-six".

Divisors: 1 2 53 67 106 134 3551 7102 4259543 8519086 225755779 285389381 451511558 570778762 15125637193 30251274386