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388300086 = 23221572227
BaseRepresentation
bin10111001001001…
…111110100110110
31000001122200120200
4113021033310312
51243401100321
6102310341330
712423332136
oct2711176466
91001580520
10388300086
1118a204669
12aa05a846
13625a6085
14397daac6
1524151d26
hex1724fd36

388300086 has 12 divisors (see below), whose sum is σ = 841316892. Its totient is φ = 129433356.

The previous prime is 388300069. The next prime is 388300091. The reversal of 388300086 is 680003883.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 388300086.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10786096 + ... + 10786131.

It is an arithmetic number, because the mean of its divisors is an integer number (70109741).

Almost surely, 2388300086 is an apocalyptic number.

388300086 is an abundant number, since it is smaller than the sum of its proper divisors (453016806).

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

388300086 is a wasteful number, since it uses less digits than its factorization.

388300086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21572235 (or 21572232 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 388300086 is about 19705.3314105599. The cubic root of 388300086 is about 729.5512886418.

The spelling of 388300086 in words is "three hundred eighty-eight million, three hundred thousand, eighty-six".

Divisors: 1 2 3 6 9 18 21572227 43144454 64716681 129433362 194150043 388300086