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252386413 = 1731458881
BaseRepresentation
bin11110000101100…
…01110001101101
3122120220120001221
433002301301231
51004102331123
641013303341
76153151306
oct1702616155
9576816057
10252386413
1111a513714
1270634b51
1340399996
142573b7ad
151725625d
hexf0b1c6d

252386413 has 4 divisors (see below), whose sum is σ = 253845468. Its totient is φ = 250927360.

The previous prime is 252386401. The next prime is 252386419. The reversal of 252386413 is 314683252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206985769 + 45400644 = 14387^2 + 6738^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-252386413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252386419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 729268 + ... + 729613.

It is an arithmetic number, because the mean of its divisors is an integer number (63461367).

Almost surely, 2252386413 is an apocalyptic number.

It is an amenable number.

252386413 is a deficient number, since it is larger than the sum of its proper divisors (1459055).

252386413 is a wasteful number, since it uses less digits than its factorization.

252386413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1459054.

The product of its digits is 34560, while the sum is 34.

The square root of 252386413 is about 15886.6740697982. The cubic root of 252386413 is about 631.9586419085.

The spelling of 252386413 in words is "two hundred fifty-two million, three hundred eighty-six thousand, four hundred thirteen".

Divisors: 1 173 1458881 252386413