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1028094749 = 11118179139
BaseRepresentation
bin111101010001110…
…111101100011101
32122122112121212022
4331101313230131
54101143012444
6250003345525
734322442533
oct7521675435
92578477768
101028094749
11488372890
122483822a5
13134cc5bb6
149a782153
15603d09ee
hex3d477b1d

1028094749 has 8 divisors (see below), whose sum is σ = 1122521760. Its totient is φ = 933828400.

The previous prime is 1028094719. The next prime is 1028094761. The reversal of 1028094749 is 9474908201.

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 1028094749 - 228 = 759659293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028094709) 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, 26579 + ... + 52560.

It is an arithmetic number, because the mean of its divisors is an integer number (140315220).

Almost surely, 21028094749 is an apocalyptic number.

It is an amenable number.

1028094749 is a deficient number, since it is larger than the sum of its proper divisors (94427011).

1028094749 is a wasteful number, since it uses less digits than its factorization.

1028094749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80331.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1028094749 is about 32063.9166197768. The cubic root of 1028094749 is about 1009.2785584182.

The spelling of 1028094749 in words is "one billion, twenty-eight million, ninety-four thousand, seven hundred forty-nine".

Divisors: 1 11 1181 12991 79139 870529 93463159 1028094749