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1028253944 = 231031247881
BaseRepresentation
bin111101010010011…
…110100011111000
32122122211201020102
4331102132203320
54101213111234
6250011014532
734324004624
oct7522364370
92578751212
101028253944
11488471453
1224843a448
131350504b3
149a7c4184
1560412c7e
hex3d49e8f8

1028253944 has 16 divisors (see below), whose sum is σ = 1946695920. Its totient is φ = 509135040.

The previous prime is 1028253937. The next prime is 1028253953. The reversal of 1028253944 is 4493528201.

It is a junction number, because it is equal to n+sod(n) for n = 1028253898 and 1028253907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623117 + ... + 624764.

It is an arithmetic number, because the mean of its divisors is an integer number (121668495).

Almost surely, 21028253944 is an apocalyptic number.

It is an amenable number.

1028253944 is a deficient number, since it is larger than the sum of its proper divisors (918441976).

1028253944 is a wasteful number, since it uses less digits than its factorization.

1028253944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247990 (or 1247986 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The square root of 1028253944 is about 32066.3989871017. The cubic root of 1028253944 is about 1009.3306495340.

The spelling of 1028253944 in words is "one billion, twenty-eight million, two hundred fifty-three thousand, nine hundred forty-four".

Divisors: 1 2 4 8 103 206 412 824 1247881 2495762 4991524 9983048 128531743 257063486 514126972 1028253944