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269338081 = 821328061
BaseRepresentation
bin10000000011011…
…100010111100001
3200202210210101111
4100003130113201
51022422304311
642420503321
76450223135
oct2003342741
9622723344
10269338081
11129041761
127624ab41
1343a5375c
1427ab13c5
15189a3d21
hex100dc5e1

269338081 has 4 divisors (see below), whose sum is σ = 269666964. Its totient is φ = 269009200.

The previous prime is 269338079. The next prime is 269338117. The reversal of 269338081 is 180833962.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 180833962 = 290416981.

It can be written as a sum of positive squares in 2 ways, for example, as 164070481 + 105267600 = 12809^2 + 10260^2 .

It is a cyclic number.

It is not a de Polignac number, because 269338081 - 21 = 269338079 is a prime.

It is a super-2 number, since 2×2693380812 = 145086003753525122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (269338001) 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, 163210 + ... + 164851.

It is an arithmetic number, because the mean of its divisors is an integer number (67416741).

Almost surely, 2269338081 is an apocalyptic number.

It is an amenable number.

269338081 is a deficient number, since it is larger than the sum of its proper divisors (328883).

269338081 is an equidigital number, since it uses as much as digits as its factorization.

269338081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328882.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 269338081 is about 16411.5228117320. The cubic root of 269338081 is about 645.8018039726.

The spelling of 269338081 in words is "two hundred sixty-nine million, three hundred thirty-eight thousand, eighty-one".

Divisors: 1 821 328061 269338081