273239820 has 144 divisors (see below), whose sum is σ = 972998208. Its totient is φ = 60756480.

The previous prime is 273239819. The next prime is 273239831. The reversal of 273239820 is 28932372.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable 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 47 ways as a sum of consecutive naturals, for example, 43690 + ... + 49550.

It is an arithmetic number, because the mean of its divisors is an integer number (6756932).

Almost surely, 2^273239820 is an apocalyptic number.

273239820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 273239820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (486499104).

273239820 is an abundant number, since it is smaller than the sum of its proper divisors (699758388).

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

273239820 is a wasteful number, since it uses less digits than its factorization.

273239820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5920 (or 5915 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 273239820 is about 16529.9673320911. The cubic root of 273239820 is about 648.9053132549.

The spelling of 273239820 in words is "two hundred seventy-three million, two hundred thirty-nine thousand, eight hundred twenty".