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2028210355 = 5405642071
BaseRepresentation
bin111100011100100…
…0000100010110011
312020100102202120001
41320321000202303
513123210212410
6533131330431
7101155334503
oct17071004263
95210382501
102028210355
11950965506
124872b0a17
13264273892
1415351da03
15bd0d633a
hex78e408b3

2028210355 has 4 divisors (see below), whose sum is σ = 2433852432. Its totient is φ = 1622568280.

The previous prime is 2028210337. The next prime is 2028210377. The reversal of 2028210355 is 5530128202.

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

It is not a de Polignac number, because 2028210355 - 217 = 2028079283 is a prime.

It is a super-2 number, since 2×20282103552 = 8227274488258452050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 202821031 + ... + 202821040.

It is an arithmetic number, because the mean of its divisors is an integer number (608463108).

Almost surely, 22028210355 is an apocalyptic number.

2028210355 is a deficient number, since it is larger than the sum of its proper divisors (405642077).

2028210355 is an equidigital number, since it uses as much as digits as its factorization.

2028210355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405642076.

The product of its (nonzero) digits is 4800, while the sum is 28.

The square root of 2028210355 is about 45035.6564846123. The cubic root of 2028210355 is about 1265.8172173674.

Adding to 2028210355 its reverse (5530128202), we get a palindrome (7558338557).

The spelling of 2028210355 in words is "two billion, twenty-eight million, two hundred ten thousand, three hundred fifty-five".

Divisors: 1 5 405642071 2028210355