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28018048838 = 2131077617263
BaseRepresentation
bin11010000110000000…
…010111111101000110
32200022121220100111112
4122012000113331012
5424340110030323
620512112005022
72011212325403
oct320600277506
980277810445
1028018048838
111097850486a
12551b230772
13284689a030
1414db12b2aa
15adeb2e178
hex686017f46

28018048838 has 8 divisors (see below), whose sum is σ = 45259925088. Its totient is φ = 12931407144.

The previous prime is 28018048819. The next prime is 28018048841. The reversal of 28018048838 is 83884081082.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×280180488382 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538808606 + ... + 538808657.

It is an arithmetic number, because the mean of its divisors is an integer number (5657490636).

Almost surely, 228018048838 is an apocalyptic number.

28018048838 is a deficient number, since it is larger than the sum of its proper divisors (17241876250).

28018048838 is a wasteful number, since it uses less digits than its factorization.

28018048838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077617278.

The product of its (nonzero) digits is 786432, while the sum is 50.

The spelling of 28018048838 in words is "twenty-eight billion, eighteen million, forty-eight thousand, eight hundred thirty-eight".

Divisors: 1 2 13 26 1077617263 2155234526 14009024419 28018048838