Base | Representation |
---|---|
bin | 10000101011100… |
… | …00010001001000 |
3 | 100202021200210010 |
4 | 20111300101020 |
5 | 241304423311 |
6 | 21514551520 |
7 | 3316206234 |
oct | 1025602110 |
9 | 322250703 |
10 | 139920456 |
11 | 71a88345 |
12 | 3aa385a0 |
13 | 22cb0090 |
14 | 148235c4 |
15 | c43cda6 |
hex | 8570448 |
139920456 has 64 divisors (see below), whose sum is σ = 378302400. Its totient is φ = 42870528.
The previous prime is 139920439. The next prime is 139920467. The reversal of 139920456 is 654029931.
It is a Harshad number since it is a multiple of its sum of digits (39).
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85615 + ... + 87233.
It is an arithmetic number, because the mean of its divisors is an integer number (5910975).
Almost surely, 2139920456 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 139920456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189151200).
139920456 is an abundant number, since it is smaller than the sum of its proper divisors (238381944).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
139920456 is a wasteful number, since it uses less digits than its factorization.
139920456 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1918 (or 1914 counting only the distinct ones).
The product of its (nonzero) digits is 58320, while the sum is 39.
The square root of 139920456 is about 11828.7977411062. The cubic root of 139920456 is about 519.1510506613.
The spelling of 139920456 in words is "one hundred thirty-nine million, nine hundred twenty thousand, four hundred fifty-six".
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