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253468829 = 775332693
BaseRepresentation
bin11110001101110…
…10000010011101
3122122221112212102
433012322002131
51004342000304
641052414445
76165310115
oct1706720235
9578845772
10253468829
11120092979
1270a77425
1340688573
1425940045
15173bbd1e
hexf1ba09d

253468829 has 4 divisors (see below), whose sum is σ = 253509276. Its totient is φ = 253428384.

The previous prime is 253468823. The next prime is 253468841. The reversal of 253468829 is 928864352.

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 136936804 + 116532025 = 11702^2 + 10795^2 .

It is a cyclic number.

It is not a de Polignac number, because 253468829 - 212 = 253464733 is a prime.

It is a super-3 number, since 3×2534688293 (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253468823) 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, 8594 + ... + 24099.

It is an arithmetic number, because the mean of its divisors is an integer number (63377319).

Almost surely, 2253468829 is an apocalyptic number.

It is an amenable number.

253468829 is a deficient number, since it is larger than the sum of its proper divisors (40447).

253468829 is an equidigital number, since it uses as much as digits as its factorization.

253468829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40446.

The product of its digits is 829440, while the sum is 47.

The square root of 253468829 is about 15920.7044128079. The cubic root of 253468829 is about 632.8607857956.

The spelling of 253468829 in words is "two hundred fifty-three million, four hundred sixty-eight thousand, eight hundred twenty-nine".

Divisors: 1 7753 32693 253468829