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15292069 = 138913217
BaseRepresentation
bin111010010101…
…011010100101
31001202220202221
4322111122211
512403321234
61303432341
7243660202
oct72253245
931686687
1015292069
1186a5181
1251556b1
133225580
142060ca9
151520eb4
hexe956a5

15292069 has 8 divisors (see below), whose sum is σ = 16654680. Its totient is φ = 13956096.

The previous prime is 15292031. The next prime is 15292073. The reversal of 15292069 is 96029251.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 15288100 = 63^2 + 3910^2 .

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 15292069 - 223 = 6903461 is a prime.

It is a super-2 number, since 2×152920692 = 467694748601522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15292009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5452 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (2081835).

Almost surely, 215292069 is an apocalyptic number.

It is an amenable number.

15292069 is a deficient number, since it is larger than the sum of its proper divisors (1362611).

15292069 is a wasteful number, since it uses less digits than its factorization.

15292069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 15292069 is about 3910.5075118199. The cubic root of 15292069 is about 248.2116050807.

The spelling of 15292069 in words is "fifteen million, two hundred ninety-two thousand, sixty-nine".

Divisors: 1 13 89 1157 13217 171821 1176313 15292069