| Base | Representation |
|---|---|
| bin | 10010111101101010100 |
| 3 | 1011120101200 |
| 4 | 2113231110 |
| 5 | 124341041 |
| 6 | 21152500 |
| 7 | 5165436 |
| oct | 2275524 |
| 9 | 1146350 |
| 10 | 621396 |
| 11 | 394956 |
| 12 | 25b730 |
| 13 | 189ab9 |
| 14 | 122656 |
| 15 | c41b6 |
| hex | 97b54 |
621396 has 36 divisors (see below), whose sum is σ = 1612884. Its totient is φ = 201600.
The previous prime is 621389. The next prime is 621419. The reversal of 621396 is 693126.
It is a happy number.
621396 is a `hidden beast` number, since 621 + 39 + 6 = 666.
It can be written as a sum of positive squares in 2 ways, for example, as 12996 + 608400 = 114^2 + 780^2 .
It is a tau number, because it is divible by the number of its divisors (36).
It is a super-2 number, since 2×6213962 = 772265977632, which contains 22 as substring.
It is a nude number because it is divisible by every one of its digits.
It is an Ulam number.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 621396.
It is an unprimeable number.
621396 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1266 + ... + 1686.
2621396 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 621396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (806442).
621396 is an abundant number, since it is smaller than the sum of its proper divisors (991488).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
621396 is a wasteful number, since it uses less digits than its factorization.
621396 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 472 (or 467 counting only the distinct ones).
The product of its digits is 1944, while the sum is 27.
The square root of 621396 is about 788.2867498569. The cubic root of 621396 is about 85.3341403461.
The spelling of 621396 in words is "six hundred twenty-one thousand, three hundred ninety-six".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.067 sec. • engine limits •