276220 has 24 divisors (see below), whose sum is σ = 663264. Its totient is φ = 94656.

The previous prime is 276209. The next prime is 276229. The reversal of 276220 is 22672.

276220 = T₇₀ + T₇₁ + ... + T₁₂₅.

It is a happy number.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276229) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 847 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (27636).

2²⁷⁶²²⁰ is an apocalyptic number.

276220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276220 is an abundant number, since it is smaller than the sum of its proper divisors (387044).

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

276220 is a wasteful number, since it uses less digits than its factorization.

276220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1989 (or 1987 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 276220 is about 525.5663611762. The cubic root of 276220 is about 65.1255954278.

Adding to 276220 its reverse (22672), we get a palindrome (298892).

It can be divided in two parts, 276 and 220, that added together give a triangular number (496 = T₃₁).

The spelling of 276220 in words is "two hundred seventy-six thousand, two hundred twenty".