Base | Representation |
---|---|
bin | 100010010010… |
… | …110101001111 |
3 | 121220202000010 |
4 | 202102311033 |
5 | 4300140111 |
6 | 520404303 |
7 | 136262001 |
oct | 42226517 |
9 | 17822003 |
10 | 8990031 |
11 | 5090386 |
12 | 3016693 |
13 | 1b29c5b |
14 | 12a0371 |
15 | bc8aa6 |
hex | 892d4f |
8990031 has 8 divisors (see below), whose sum is σ = 12373504. Its totient is φ = 5799960.
The previous prime is 8990027. The next prime is 8990039. The reversal of 8990031 is 1300998.
It is a happy number.
8990031 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 8990031 - 22 = 8990027 is a prime.
It is a super-2 number, since 2×89900312 = 161641314761922, which contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8990039) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48241 + ... + 48426.
It is an arithmetic number, because the mean of its divisors is an integer number (1546688).
Almost surely, 28990031 is an apocalyptic number.
8990031 is a deficient number, since it is larger than the sum of its proper divisors (3383473).
8990031 is a wasteful number, since it uses less digits than its factorization.
8990031 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 96701.
The product of its (nonzero) digits is 1944, while the sum is 30.
The square root of 8990031 is about 2998.3380396480. The cubic root of 8990031 is about 207.9315526138.
The spelling of 8990031 in words is "eight million, nine hundred ninety thousand, thirty-one".
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