Base | Representation |
---|---|
bin | 101001110000… |
… | …0010100110000 |
3 | 1112012010220210 |
4 | 1103200110300 |
5 | 21100442402 |
6 | 2101104120 |
7 | 354031161 |
oct | 123402460 |
9 | 45163823 |
10 | 21890352 |
11 | 113a1600 |
12 | 73b8040 |
13 | 46c5993 |
14 | 2c9b768 |
15 | 1dc606c |
hex | 14e0530 |
21890352 has 60 divisors (see below), whose sum is σ = 62174840. Its totient is φ = 6631680.
The previous prime is 21890329. The next prime is 21890369. The reversal of 21890352 is 25309812.
It is a happy number.
It is an unprimeable number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3924 + ... + 7692.
Almost surely, 221890352 is an apocalyptic number.
21890352 is a gapful number since it is divisible by the number (22) 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 21890352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31087420).
21890352 is an abundant number, since it is smaller than the sum of its proper divisors (40284488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21890352 is a wasteful number, since it uses less digits than its factorization.
21890352 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3802 (or 3785 counting only the distinct ones).
The product of its (nonzero) digits is 4320, while the sum is 30.
The square root of 21890352 is about 4678.7126434523. The cubic root of 21890352 is about 279.7376454121.
The spelling of 21890352 in words is "twenty-one million, eight hundred ninety thousand, three hundred fifty-two".
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