276032780 has 24 divisors (see below), whose sum is σ = 580247808. Its totient is φ = 110302848.

The previous prime is 276032777. The next prime is 276032789. The reversal of 276032780 is 87230672.

It is a self number, because there is not a number n which added to its sum of digits gives 276032780.

It is not an unprimeable number, because it can be changed into a prime (276032789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15392 + ... + 28088.

It is an arithmetic number, because the mean of its divisors is an integer number (24176992).

Almost surely, 2^276032780 is an apocalyptic number.

276032780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276032780 is an abundant number, since it is smaller than the sum of its proper divisors (304215028).

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

276032780 is a wasteful number, since it uses less digits than its factorization.

276032780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13793 (or 13791 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 276032780 is about 16614.2342586109. The cubic root of 276032780 is about 651.1087820996.

The spelling of 276032780 in words is "two hundred seventy-six million, thirty-two thousand, seven hundred eighty".