Base | Representation |
---|---|
bin | 111011001011… |
… | …1010111101000 |
3 | 2011101102101120 |
4 | 1312113113220 |
5 | 30420404322 |
6 | 3025015240 |
7 | 524511501 |
oct | 166272750 |
9 | 64342346 |
10 | 31028712 |
11 | 16573370 |
12 | a484520 |
13 | 65752b0 |
14 | 4199ba8 |
15 | 2acda5c |
hex | 1d975e8 |
31028712 has 64 divisors (see below), whose sum is σ = 91143360. Its totient is φ = 8678400.
The previous prime is 31028707. The next prime is 31028713. The reversal of 31028712 is 21782013.
It is a Harshad number since it is a multiple of its sum of digits (24).
It is a cake number, because a cake can be divided into 31028712 parts by 571 planar cuts.
It is not an unprimeable number, because it can be changed into a prime (31028713) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1089 + ... + 7952.
It is an arithmetic number, because the mean of its divisors is an integer number (1424115).
Almost surely, 231028712 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 31028712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45571680).
31028712 is an abundant number, since it is smaller than the sum of its proper divisors (60114648).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
31028712 is a wasteful number, since it uses less digits than its factorization.
31028712 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9074 (or 9070 counting only the distinct ones).
The product of its (nonzero) digits is 672, while the sum is 24.
The square root of 31028712 is about 5570.3421797947. The cubic root of 31028712 is about 314.2350195289.
The spelling of 31028712 in words is "thirty-one million, twenty-eight thousand, seven hundred twelve".
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