276643340 has 12 divisors (see below), whose sum is σ = 580951056. Its totient is φ = 110657328.

The previous prime is 276643337. The next prime is 276643351. The reversal of 276643340 is 43346672.

It is a self number, because there is not a number n which added to its sum of digits gives 276643340.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6916064 + ... + 6916103.

It is an arithmetic number, because the mean of its divisors is an integer number (48412588).

Almost surely, 2^276643340 is an apocalyptic number.

276643340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276643340 is an abundant number, since it is smaller than the sum of its proper divisors (304307716).

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

276643340 is a wasteful number, since it uses less digits than its factorization.

276643340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13832176 (or 13832174 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 35.

The square root of 276643340 is about 16632.5987145725. The cubic root of 276643340 is about 651.5884935180.

The spelling of 276643340 in words is "two hundred seventy-six million, six hundred forty-three thousand, three hundred forty".