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1028537069 = 7236388429
BaseRepresentation
bin111101010011100…
…011101011101101
32122200101002121112
4331103203223231
54101301141234
6250021041405
734326264230
oct7523435355
92580332545
101028537069
1148864513a
12248556265
1313511c321
149a859417
156046bace
hex3d4e3aed

1028537069 has 8 divisors (see below), whose sum is σ = 1226578560. Its totient is φ = 843272496.

The previous prime is 1028537057. The next prime is 1028537071. The reversal of 1028537069 is 9607358201.

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 1028537069 - 28 = 1028536813 is a prime.

It is a super-2 number, since 2×10285370692 = 2115777004614221522, 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 (1028537039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3194054 + ... + 3194375.

It is an arithmetic number, because the mean of its divisors is an integer number (153322320).

Almost surely, 21028537069 is an apocalyptic number.

It is an amenable number.

1028537069 is a deficient number, since it is larger than the sum of its proper divisors (198041491).

1028537069 is an equidigital number, since it uses as much as digits as its factorization.

1028537069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6388459.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 1028537069 is about 32070.8133510829. The cubic root of 1028537069 is about 1009.4232792187.

The spelling of 1028537069 in words is "one billion, twenty-eight million, five hundred thirty-seven thousand, sixty-nine".

Divisors: 1 7 23 161 6388429 44719003 146933867 1028537069