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122738252 = 227131917747
BaseRepresentation
bin1110101000011…
…01011001001100
322112221202020012
413110031121030
5222410111002
620102412352
73020154320
oct724153114
9275852205
10122738252
116331207a
12351310b8
131c5753b0
141242d980
15ab96d52
hex750d64c

122738252 has 48 divisors (see below), whose sum is σ = 278288640. Its totient is φ = 45997632.

The previous prime is 122738243. The next prime is 122738257. The reversal of 122738252 is 252837221.

It is not an unprimeable number, because it can be changed into a prime (122738257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1958 + ... + 15789.

It is an arithmetic number, because the mean of its divisors is an integer number (5797680).

Almost surely, 2122738252 is an apocalyptic number.

It is an amenable number.

122738252 is an abundant number, since it is smaller than the sum of its proper divisors (155550388).

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

122738252 is a wasteful number, since it uses less digits than its factorization.

122738252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17790 (or 17788 counting only the distinct ones).

The product of its digits is 13440, while the sum is 32.

The square root of 122738252 is about 11078.7297105760. The cubic root of 122738252 is about 496.9659624719.

The spelling of 122738252 in words is "one hundred twenty-two million, seven hundred thirty-eight thousand, two hundred fifty-two".

Divisors: 1 2 4 7 13 14 19 26 28 38 52 76 91 133 182 247 266 364 494 532 988 1729 3458 6916 17747 35494 70988 124229 230711 248458 337193 461422 496916 674386 922844 1348772 1614977 2360351 3229954 4383509 4720702 6459908 8767018 9441404 17534036 30684563 61369126 122738252