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69450049 = 1715726021
BaseRepresentation
bin1000010001110…
…11100101000001
311211200102120001
410020323211001
5120234400144
610520320001
71502213164
oct410734501
9154612501
1069450049
1136225939
121b313001
1311508406
14931badb
15616cbd4
hex423b941

69450049 has 8 divisors (see below), whose sum is σ = 74006568. Its totient is φ = 64945920.

The previous prime is 69450037. The next prime is 69450053. The reversal of 69450049 is 94005496.

It can be written as a sum of positive squares in 4 ways, for example, as 33269824 + 36180225 = 5768^2 + 6015^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69450049 - 213 = 69441857 is a prime.

It is a super-2 number, since 2×694500492 = 9646618612204802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69450079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10342 + ... + 15679.

It is an arithmetic number, because the mean of its divisors is an integer number (9250821).

Almost surely, 269450049 is an apocalyptic number.

It is an amenable number.

69450049 is a deficient number, since it is larger than the sum of its proper divisors (4556519).

69450049 is a wasteful number, since it uses less digits than its factorization.

69450049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26195.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 69450049 is about 8333.6695998822. The cubic root of 69450049 is about 411.0464030424.

The spelling of 69450049 in words is "sixty-nine million, four hundred fifty thousand, forty-nine".

Divisors: 1 17 157 2669 26021 442357 4085297 69450049