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12258297012 = 2231397810091
BaseRepresentation
bin10110110101010011…
…01100010010110100
31011122022011000020110
423122221230102310
5200101111001022
65344213503020
7612525543153
oct133251542264
934568130213
1012258297012
115220541a85
122461341a70
1312048208b0
1484405759a
154bb29300c
hex2daa6c4b4

12258297012 has 48 divisors (see below), whose sum is σ = 31120494272. Its totient is φ = 3732894720.

The previous prime is 12258296989. The next prime is 12258297017. The reversal of 12258297012 is 21079285221.

12258297012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12258297017) 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, 389914 + ... + 420177.

Almost surely, 212258297012 is an apocalyptic number.

12258297012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12258297012 is an abundant number, since it is smaller than the sum of its proper divisors (18862197260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12258297012 is a wasteful number, since it uses less digits than its factorization.

12258297012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810208 (or 810206 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12258297012 in words is "twelve billion, two hundred fifty-eight million, two hundred ninety-seven thousand, twelve".

Divisors: 1 2 3 4 6 12 13 26 39 52 78 97 156 194 291 388 582 1164 1261 2522 3783 5044 7566 15132 810091 1620182 2430273 3240364 4860546 9721092 10531183 21062366 31593549 42124732 63187098 78578827 126374196 157157654 235736481 314315308 471472962 942945924 1021524751 2043049502 3064574253 4086099004 6129148506 12258297012