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7978285053 = 331148325733
BaseRepresentation
bin1110110111000101…
…01111011111111101
3202121000112212121000
413123202233133331
5112314420110203
63355402200513
7401465206164
oct73342573775
922530485530
107978285053
113424596712
121667ab3139
139a1bac23b
145598543db
1531a65b4a3
hex1db8af7fd

7978285053 has 16 divisors (see below), whose sum is σ = 11821170240. Its totient is φ = 5318186832.

The previous prime is 7978285043. The next prime is 7978285061. The reversal of 7978285053 is 3505828797.

7978285053 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 7978285053 - 24 = 7978285037 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7978285043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 297175 + ... + 322907.

It is an arithmetic number, because the mean of its divisors is an integer number (738823140).

Almost surely, 27978285053 is an apocalyptic number.

It is an amenable number.

7978285053 is a deficient number, since it is larger than the sum of its proper divisors (3842885187).

7978285053 is a wasteful number, since it uses less digits than its factorization.

7978285053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37225 (or 37219 counting only the distinct ones).

The product of its (nonzero) digits is 4233600, while the sum is 54.

The square root of 7978285053 is about 89321.2463694949. The cubic root of 7978285053 is about 1998.1887813219.

The spelling of 7978285053 in words is "seven billion, nine hundred seventy-eight million, two hundred eighty-five thousand, fifty-three".

Divisors: 1 3 9 27 11483 25733 34449 77199 103347 231597 310041 694791 295492039 886476117 2659428351 7978285053