[go: up one dir, main page]

Search a number
-
+
620231033 = 2921387277
BaseRepresentation
bin100100111101111…
…111100101111001
31121020002000000202
4210331333211321
52232234343113
6141313411545
721240606512
oct4475774571
91536060022
10620231033
11299116834
12153869bb5
139b660216
145c531a09
15396b7258
hex24f7f979

620231033 has 4 divisors (see below), whose sum is σ = 641618340. Its totient is φ = 598843728.

The previous prime is 620230999. The next prime is 620231039. The reversal of 620231033 is 330132026.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 344770624 + 275460409 = 18568^2 + 16597^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-620231033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 620230996 and 620231014.

It is not an unprimeable number, because it can be changed into a prime (620231039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10693610 + ... + 10693667.

It is an arithmetic number, because the mean of its divisors is an integer number (160404585).

Almost surely, 2620231033 is an apocalyptic number.

It is an amenable number.

620231033 is a deficient number, since it is larger than the sum of its proper divisors (21387307).

620231033 is a wasteful number, since it uses less digits than its factorization.

620231033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21387306.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 620231033 is about 24904.4380181525. The cubic root of 620231033 is about 852.8078003781.

Adding to 620231033 its reverse (330132026), we get a palindrome (950363059).

The spelling of 620231033 in words is "six hundred twenty million, two hundred thirty-one thousand, thirty-three".

Divisors: 1 29 21387277 620231033