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139248 = 2432967
BaseRepresentation
bin100001111111110000
321002000100
4201333300
513423443
62552400
71116654
oct417760
9232010
10139248
119568a
1268700
134b4c5
1438a64
152b3d3
hex21ff0

139248 has 30 divisors (see below), whose sum is σ = 390104. Its totient is φ = 46368.

The previous prime is 139241. The next prime is 139267. The reversal of 139248 is 842931.

It can be divided in two parts, 13 and 9248, that added together give a cube (9261 = 213).

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is one of the 548 Lynch-Bell numbers.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139248.

It is not an unprimeable number, because it can be changed into a prime (139241) by changing a digit.

139248 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 340 + ... + 627.

2139248 is an apocalyptic number.

139248 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139248 is an abundant number, since it is smaller than the sum of its proper divisors (250856).

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

139248 is a wasteful number, since it uses less digits than its factorization.

139248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981 (or 972 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 139248 is about 373.1594833312. The cubic root of 139248 is about 51.8318036882.

The spelling of 139248 in words is "one hundred thirty-nine thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 967 1934 2901 3868 5802 7736 8703 11604 15472 17406 23208 34812 46416 69624 139248