| Base | Representation |
|---|---|
| bin | 11010110100100… |
| … | …111010010000000 |
| 3 | 1011100202100221200 |
| 4 | 122310213102000 |
| 5 | 1410200000000 |
| 6 | 112353021200 |
| 7 | 14102636232 |
| oct | 3264472200 |
| 9 | 1140670850 |
| 10 | 450000000 |
| 11 | 21101672a |
| 12 | 106854800 |
| 13 | 722c99b8 |
| 14 | 43a9c252 |
| 15 | 2978d500 |
| hex | 1ad27480 |
450000000 has 216 divisors, whose sum is σ = 1618651515. Its totient is φ = 120000000.
The previous prime is 449999993. The next prime is 450000007. The reversal of 450000000 is 54.
It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.
It is an interprime number because it is at equal distance from previous prime (449999993) and next prime (450000007).
It can be written as a sum of positive squares in 5 ways, for example, as 428986944 + 21013056 = 20712^2 + 4584^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=15000.
It is a Harshad number since it is a multiple of its sum of digits (9).
It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.
It is not an unprimeable number, because it can be changed into a prime (450000007) by changing a digit.
It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 89999998 + ... + 90000002.
Almost surely, 2450000000 is an apocalyptic number.
450000000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 450000000
450000000 is an abundant number, since it is smaller than the sum of its proper divisors (1168651515).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
450000000 is an frugal number, since it uses more digits than its factorization.
450000000 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 60 (or 10 counting only the distinct ones).
The product of its (nonzero) digits is 20, while the sum is 9.
The square root of 450000000 is about 21213.2034355964. The cubic root of 450000000 is about 766.3094323936.
Adding to 450000000 its reverse (54), we get a palindrome (450000054).
The spelling of 450000000 in words is "four hundred fifty million", and thus it is an aban number.
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