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1028250528 = 25371914897
BaseRepresentation
bin111101010010011…
…101101110100000
32122122211112112220
4331102131232200
54101213004103
6250010551040
734323661644
oct7522355640
92578745486
101028250528
11488469928
12248438480
1313504ba86
149a7c2c24
1560411c53
hex3d49dba0

1028250528 has 48 divisors (see below), whose sum is σ = 2703093120. Its totient is φ = 342250496.

The previous prime is 1028250527. The next prime is 1028250577. The reversal of 1028250528 is 8250528201.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (1028250527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61576 + ... + 76472.

It is an arithmetic number, because the mean of its divisors is an integer number (56314440).

Almost surely, 21028250528 is an apocalyptic number.

It is an amenable number.

1028250528 is an abundant number, since it is smaller than the sum of its proper divisors (1674842592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1028250528 is a wasteful number, since it uses less digits than its factorization.

1028250528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15629 (or 15621 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 1028250528 is about 32066.3457225796. The cubic root of 1028250528 is about 1009.3295318213.

Adding to 1028250528 its reverse (8250528201), we get a palindrome (9278778729).

The spelling of 1028250528 in words is "one billion, twenty-eight million, two hundred fifty thousand, five hundred twenty-eight".

Divisors: 1 2 3 4 6 8 12 16 24 32 48 96 719 1438 2157 2876 4314 5752 8628 11504 14897 17256 23008 29794 34512 44691 59588 69024 89382 119176 178764 238352 357528 476704 715056 1430112 10710943 21421886 32132829 42843772 64265658 85687544 128531316 171375088 257062632 342750176 514125264 1028250528