276642 has 32 divisors (see below), whose sum is σ = 633600. Its totient is φ = 89424.

The previous prime is 276637. The next prime is 276671. The reversal of 276642 is 246672.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

276642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2484 + ... + 2592.

It is an arithmetic number, because the mean of its divisors is an integer number (19800).

2²⁷⁶⁶⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (316800).

276642 is an abundant number, since it is smaller than the sum of its proper divisors (356958).

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

276642 is a wasteful number, since it uses less digits than its factorization.

276642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167 (or 161 counting only the distinct ones).

The product of its digits is 4032, while the sum is 27.

The square root of 276642 is about 525.9676796154. The cubic root of 276642 is about 65.1587441465.

The spelling of 276642 in words is "two hundred seventy-six thousand, six hundred forty-two".