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87074812800 = 2732526474673
BaseRepresentation
bin101000100011000010…
…0000011001110000000
322022202101121210122200
41101012010003032000
52411312123002200
6104000203233200
76201536460663
oct1210604031600
9268671553580
1087074812800
1133a23509708
1214a61218800
138298aa3091
14430060b6da
1523e9664800
hex1446103380

87074812800 has 288 divisors, whose sum is σ = 311249699280. Its totient is φ = 23179100160.

The previous prime is 87074812763. The next prime is 87074812801. The reversal of 87074812800 is 821847078.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87074812801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 18631264 + ... + 18635936.

Almost surely, 287074812800 is an apocalyptic number.

87074812800 is a gapful number since it is divisible by the number (80) 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 87074812800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155624849640).

87074812800 is an abundant number, since it is smaller than the sum of its proper divisors (224174886480).

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

87074812800 is a wasteful number, since it uses less digits than its factorization.

87074812800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5350 (or 5330 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 45.

The spelling of 87074812800 in words is "eighty-seven billion, seventy-four million, eight hundred twelve thousand, eight hundred".