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388069900 = 225219919501
BaseRepresentation
bin10111001000010…
…111101000001100
31000001012222211021
4113020113220030
51243321214100
6102301403524
712421353061
oct2710275014
91001188737
10388069900
1118a067729
12a9b695a4
136252537a
143977ac68
1524108a1a
hex17217a0c

388069900 has 36 divisors (see below), whose sum is σ = 846386800. Its totient is φ = 154440000.

The previous prime is 388069859. The next prime is 388069919. The reversal of 388069900 is 9960883.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10150 + ... + 29650.

Almost surely, 2388069900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388069900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (423193400).

388069900 is an abundant number, since it is smaller than the sum of its proper divisors (458316900).

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

388069900 is a wasteful number, since it uses less digits than its factorization.

388069900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19714 (or 19707 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 388069900 is about 19699.4898411101. The cubic root of 388069900 is about 729.4070997411.

The spelling of 388069900 in words is "three hundred eighty-eight million, sixty-nine thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 100 199 398 796 995 1990 3980 4975 9950 19501 19900 39002 78004 97505 195010 390020 487525 975050 1950100 3880699 7761398 15522796 19403495 38806990 77613980 97017475 194034950 388069900