Base | Representation |
---|---|
bin | 1010110000010… |
… | …00011010100100 |
3 | 20021202020121100 |
4 | 11120020122210 |
5 | 141043241004 |
6 | 12541320100 |
7 | 2143534521 |
oct | 530103244 |
9 | 207666540 |
10 | 90212004 |
11 | 46a16683 |
12 | 26266030 |
13 | 158c75ac |
14 | bda4148 |
15 | 7dbe739 |
hex | 56086a4 |
90212004 has 27 divisors (see below), whose sum is σ = 228180043. Its totient is φ = 30051672.
The previous prime is 90211993. The next prime is 90212009. The reversal of 90212004 is 40021209.
The square root of 90212004 is 9498.
It is a perfect power (a square), and thus also a powerful number.
It is a Harshad number since it is a multiple of its sum of digits (18).
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (90212009) by changing a digit.
It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 56197 + ... + 57779.
Almost surely, 290212004 is an apocalyptic number.
90212004 is the 9498-th square number.
It is an amenable number.
90212004 is an abundant number, since it is smaller than the sum of its proper divisors (137968039).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
90212004 is a wasteful number, since it uses less digits than its factorization.
90212004 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 3176 (or 1588 counting only the distinct ones).
The product of its (nonzero) digits is 144, while the sum is 18.
The cubic root of 90212004 is about 448.4920786213.
Multiplying 90212004 by its product of nonzero digits (144), we get a square (12990528576 = 1139762).
It can be divided in two parts, 9021 and 2004, that added together give a square (11025 = 1052).
The spelling of 90212004 in words is "ninety million, two hundred twelve thousand, four".
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