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252688029 = 31119733881
BaseRepresentation
bin11110000111110…
…11011010011101
3122121110212210220
433003323122131
51004142004104
641023551553
76155545536
oct1703733235
9577425726
10252688029
1111a6aa290
127075b5b9
1340474059
14257b968d
15172b57d9
hexf0fb69d

252688029 has 16 divisors (see below), whose sum is σ = 367827264. Its totient is φ = 153027200.

The previous prime is 252688003. The next prime is 252688039. The reversal of 252688029 is 920886252.

It is a cyclic number.

It is not a de Polignac number, because 252688029 - 25 = 252687997 is a prime.

It is a super-3 number, since 3×2526880293 (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252688039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63169 + ... + 67049.

It is an arithmetic number, because the mean of its divisors is an integer number (22989204).

Almost surely, 2252688029 is an apocalyptic number.

It is an amenable number.

252688029 is a deficient number, since it is larger than the sum of its proper divisors (115139235).

252688029 is a wasteful number, since it uses less digits than its factorization.

252688029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 252688029 is about 15896.1639712227. The cubic root of 252688029 is about 632.2102837678.

The spelling of 252688029 in words is "two hundred fifty-two million, six hundred eighty-eight thousand, twenty-nine".

Divisors: 1 3 11 33 1973 3881 5919 11643 21703 42691 65109 128073 7657213 22971639 84229343 252688029