Search a number
-
+
139920456 = 233132771619
BaseRepresentation
bin10000101011100…
…00010001001000
3100202021200210010
420111300101020
5241304423311
621514551520
73316206234
oct1025602110
9322250703
10139920456
1171a88345
123aa385a0
1322cb0090
14148235c4
15c43cda6
hex8570448

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".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 277 312 554 831 1108 1619 1662 2216 3238 3324 3601 4857 6476 6648 7202 9714 10803 12952 14404 19428 21047 21606 28808 38856 42094 43212 63141 84188 86424 126282 168376 252564 448463 505128 896926 1345389 1793852 2690778 3587704 5381556 5830019 10763112 11660038 17490057 23320076 34980114 46640152 69960228 139920456