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28758056060861 = 53566639575999
BaseRepresentation
bin1101000100111110000011…
…01101110100011110111101
310202211020120101001202211022
412202133001231310132331
512232132444322421421
6141055134002233525
76025462303160261
oct642370155643675
9122736511052738
1028758056060861
11918824aa1a756
1232856069558a5
131307b4712595a
14715c7c4300a1
1534d0e2b197ab
hex1a27c1b747bd

28758056060861 has 8 divisors (see below), whose sum is σ = 29301181056000. Its totient is φ = 28214950331152.

The previous prime is 28758056060827. The next prime is 28758056060897. The reversal of 28758056060861 is 16806065085782.

It is a happy number.

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 28758056060861 - 238 = 28483178153917 is a prime.

It is a super-2 number, since 2×287580560608612 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28758056060794 and 28758056060803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28758056060821) 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, 1784861 + ... + 7791138.

It is an arithmetic number, because the mean of its divisors is an integer number (3662647632000).

Almost surely, 228758056060861 is an apocalyptic number.

It is an amenable number.

28758056060861 is a deficient number, since it is larger than the sum of its proper divisors (543124995139).

28758056060861 is an equidigital number, since it uses as much as digits as its factorization.

28758056060861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9632715.

The product of its (nonzero) digits is 38707200, while the sum is 62.

The spelling of 28758056060861 in words is "twenty-eight trillion, seven hundred fifty-eight billion, fifty-six million, sixty thousand, eight hundred sixty-one".

Divisors: 1 53 56663 3003139 9575999 507527947 542604831337 28758056060861