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42870746880 = 2834513171871
BaseRepresentation
bin100111111011010010…
…111010111100000000
311002122201212120220000
4213323102322330000
51200244402400010
631410004520000
73045243223143
oct477322727400
9132581776800
1042870746880
11171aa467725
1283853b0000
134072a50260
14210996a05a
1511ada487c0
hex9fb4baf00

42870746880 has 720 divisors, whose sum is σ = 175010419584. Its totient is φ = 9926737920.

The previous prime is 42870746879. The next prime is 42870746899. The reversal of 42870746880 is 8864707824.

It is a happy number.

42870746880 is a `hidden beast` number, since 428 + 70 + 74 + 6 + 8 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (720).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 22912345 + ... + 22914215.

Almost surely, 242870746880 is an apocalyptic number.

42870746880 is a gapful number since it is divisible by the number (40) 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 42870746880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87505209792).

42870746880 is an abundant number, since it is smaller than the sum of its proper divisors (132139672704).

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

42870746880 is a wasteful number, since it uses less digits than its factorization.

42870746880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1934 (or 1911 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

The spelling of 42870746880 in words is "forty-two billion, eight hundred seventy million, seven hundred forty-six thousand, eight hundred eighty".