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1388050 = 252172371
BaseRepresentation
bin101010010111000010010
32121112001021
411102320102
5323404200
645430054
714540536
oct5227022
92545037
101388050
11868954
1256b32a
13397a41
14281bc6
151c641a
hex152e12

1388050 has 48 divisors (see below), whose sum is σ = 2892672. Its totient is φ = 492800.

The previous prime is 1388041. The next prime is 1388053. The reversal of 1388050 is 508831.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19515 + ... + 19585.

It is an arithmetic number, because the mean of its divisors is an integer number (60264).

21388050 is an apocalyptic number.

1388050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1388050 is an abundant number, since it is smaller than the sum of its proper divisors (1504622).

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

1388050 is a wasteful number, since it uses less digits than its factorization.

1388050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 1388050 is about 1178.1553378057. The cubic root of 1388050 is about 111.5496906284.

The spelling of 1388050 in words is "one million, three hundred eighty-eight thousand, fifty".

Divisors: 1 2 5 10 17 23 25 34 46 50 71 85 115 142 170 230 355 391 425 575 710 782 850 1150 1207 1633 1775 1955 2414 3266 3550 3910 6035 8165 9775 12070 16330 19550 27761 30175 40825 55522 60350 81650 138805 277610 694025 1388050