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28082998043 = 157178872599
BaseRepresentation
bin11010001001111000…
…001000101100011011
32200111011010010001122
4122021320020230123
5430003221414133
620522352035455
72012631354602
oct321170105433
980434103048
1028082998043
1110a011360a1
125538b32b8b
13285718a909
1415059d6a39
15ae56ad498
hex689e08b1b

28082998043 has 4 divisors (see below), whose sum is σ = 28261870800. Its totient is φ = 27904125288.

The previous prime is 28082998001. The next prime is 28082998057. The reversal of 28082998043 is 34089928082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28082998043 - 26 = 28082997979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28082998943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89436143 + ... + 89436456.

It is an arithmetic number, because the mean of its divisors is an integer number (7065467700).

Almost surely, 228082998043 is an apocalyptic number.

28082998043 is a deficient number, since it is larger than the sum of its proper divisors (178872757).

28082998043 is a wasteful number, since it uses less digits than its factorization.

28082998043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178872756.

The product of its (nonzero) digits is 1990656, while the sum is 53.

The spelling of 28082998043 in words is "twenty-eight billion, eighty-two million, nine hundred ninety-eight thousand, forty-three".

Divisors: 1 157 178872599 28082998043