273820 has 12 divisors (see below), whose sum is σ = 575064. Its totient is φ = 109520.

The previous prime is 273803. The next prime is 273821. The reversal of 273820 is 28372.

273820 = T₂₂₉ + T₂₃₀ + ... + T₂₃₈.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 273791 and 273800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (273821) 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, 6826 + ... + 6865.

It is an arithmetic number, because the mean of its divisors is an integer number (47922).

2²⁷³⁸²⁰ is an apocalyptic number.

273820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

273820 is an abundant number, since it is smaller than the sum of its proper divisors (301244).

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

273820 is a wasteful number, since it uses less digits than its factorization.

273820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13700 (or 13698 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 273820 is about 523.2781287231. The cubic root of 273820 is about 64.9364269948.

The spelling of 273820 in words is "two hundred seventy-three thousand, eight hundred twenty".