Base | Representation |
---|---|
bin | 111011101010… |
… | …0101111100000 |
3 | 2011212012020002 |
4 | 1313110233200 |
5 | 31001430341 |
6 | 3034235132 |
7 | 526606421 |
oct | 167245740 |
9 | 64765202 |
10 | 31280096 |
11 | 16725221 |
12 | a585aa8 |
13 | 6632843 |
14 | 4223648 |
15 | 2b2d29b |
hex | 1dd4be0 |
31280096 has 48 divisors (see below), whose sum is σ = 65499840. Its totient is φ = 14676480.
The previous prime is 31280087. The next prime is 31280101. The reversal of 31280096 is 69008213.
It is a Harshad number since it is a multiple of its sum of digits (29).
It is a pancake number, because a pancake can be divided into 31280096 parts by 7909 straight cuts.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33881 + ... + 34791.
It is an arithmetic number, because the mean of its divisors is an integer number (1364580).
Almost surely, 231280096 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 31280096, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32749920).
31280096 is an abundant number, since it is smaller than the sum of its proper divisors (34219744).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31280096 is a wasteful number, since it uses less digits than its factorization.
31280096 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 987 (or 979 counting only the distinct ones).
The product of its (nonzero) digits is 2592, while the sum is 29.
The square root of 31280096 is about 5592.8611640197. The cubic root of 31280096 is about 315.0813462541.
It can be divided in two parts, 312 and 80096, that added together give a palindrome (80408).
The spelling of 31280096 in words is "thirty-one million, two hundred eighty thousand, ninety-six".
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