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28494152930880 = 263357413196783
BaseRepresentation
bin1100111101010010011111…
…10111010001011001000000
310201220000101111202201211000
412132221033313101121000
512213322011122242010
6140334011054252000
76000430446450000
oct636511767213100
9121800344681730
1028494152930880
11909633654113a
1232424361b7000
1312b8caa843b40
147071a5360000
153462e94547c0
hex19ea4fdd1640

28494152930880 has 4480 divisors, whose sum is σ = 136544528332800. Its totient is φ = 5542929874944.

The previous prime is 28494152930879. The next prime is 28494152930897. The reversal of 28494152930880 is 8803925149482.

28494152930880 is a `hidden beast` number, since 2 + 8 + 494 + 1 + 52 + 93 + 0 + 8 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 639 ways as a sum of consecutive naturals, for example, 343303047319 + ... + 343303047401.

It is an arithmetic number, because the mean of its divisors is an integer number (30478689360).

Almost surely, 228494152930880 is an apocalyptic number.

28494152930880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28494152930880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68272264166400).

28494152930880 is an abundant number, since it is smaller than the sum of its proper divisors (108050375401920).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28494152930880 is a wasteful number, since it uses less digits than its factorization.

28494152930880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 199 counting only the distinct ones).

The product of its (nonzero) digits is 39813120, while the sum is 63.

The spelling of 28494152930880 in words is "twenty-eight trillion, four hundred ninety-four billion, one hundred fifty-two million, nine hundred thirty thousand, eight hundred eighty".