2028748436 has 36 divisors (see below), whose sum is σ = 4202604756. Its totient is φ = 851220480.

The previous prime is 2028748433. The next prime is 2028748451. The reversal of 2028748436 is 6348478202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 372258436 + 1656490000 = 19294^2 + 40700^2 .

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028748433) 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 11 ways as a sum of consecutive naturals, for example, 154925 + ... + 167508.

It is an arithmetic number, because the mean of its divisors is an integer number (116739021).

Almost surely, 2^2028748436 is an apocalyptic number.

2028748436 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2028748436 is an abundant number, since it is smaller than the sum of its proper divisors (2173856320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2028748436 is a wasteful number, since it uses less digits than its factorization.

2028748436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322472 (or 322459 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 44.

The square root of 2028748436 is about 45041.6300326709. The cubic root of 2028748436 is about 1265.9291472385.

The spelling of 2028748436 in words is "two billion, twenty-eight million, seven hundred forty-eight thousand, four hundred thirty-six".