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28977872732160 = 2153511131163251
BaseRepresentation
bin1101001011010111011111…
…10011111000000000000000
310210121020221202220122212120
412211223233303320000000
512244233140404412120
6141344130112324240
76050403462100212
oct645535763700000
9123536852818776
1028977872732160
1192624a0784350
123300132b43680
1313227a8b51721
147227723145b2
15353baab95140
hex1a5aefcf8000

28977872732160 has 1024 divisors, whose sum is σ = 102963693127680. Its totient is φ = 6900940800000.

The previous prime is 28977872732101. The next prime is 28977872732173. The reversal of 28977872732160 is 6123727877982.

It is a tau number, because it is divible by the number of its divisors (1024).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 115449692035 + ... + 115449692285.

It is an arithmetic number, because the mean of its divisors is an integer number (100550481570).

Almost surely, 228977872732160 is an apocalyptic number.

28977872732160 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 28977872732160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51481846563840).

28977872732160 is an abundant number, since it is smaller than the sum of its proper divisors (73985820395520).

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

28977872732160 is a wasteful number, since it uses less digits than its factorization.

28977872732160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 594 (or 566 counting only the distinct ones).

The product of its (nonzero) digits is 199148544, while the sum is 69.

The spelling of 28977872732160 in words is "twenty-eight trillion, nine hundred seventy-seven billion, eight hundred seventy-two million, seven hundred thirty-two thousand, one hundred sixty".