Search a number
-
+
2028619207 = 7872577661
BaseRepresentation
bin111100011101010…
…0100010111000111
312020101012112101201
41320322210113013
513123311303312
6533144203331
7101161656466
oct17072442707
95211175351
102028619207
119511146aa
12487469547
132643879c4
141535c89dd
15bd167557
hex78ea45c7

2028619207 has 4 divisors (see below), whose sum is σ = 2031197656. Its totient is φ = 2026040760.

The previous prime is 2028619169. The next prime is 2028619253. The reversal of 2028619207 is 7029168202.

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

It is a cyclic number.

It is not a de Polignac number, because 2028619207 - 27 = 2028619079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028619277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1288044 + ... + 1289617.

It is an arithmetic number, because the mean of its divisors is an integer number (507799414).

Almost surely, 22028619207 is an apocalyptic number.

2028619207 is a deficient number, since it is larger than the sum of its proper divisors (2578449).

2028619207 is an equidigital number, since it uses as much as digits as its factorization.

2028619207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578448.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 2028619207 is about 45040.1954591674. The cubic root of 2028619207 is about 1265.9022672454.

It can be divided in two parts, 20286 and 19207, that added together give a palindrome (39493).

The spelling of 2028619207 in words is "two billion, twenty-eight million, six hundred nineteen thousand, two hundred seven".

Divisors: 1 787 2577661 2028619207