276890640 has 80 divisors (see below), whose sum is σ = 924399168. Its totient is φ = 68156928.

The previous prime is 276890617. The next prime is 276890681. The reversal of 276890640 is 46098672.

276890640 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 276890592 and 276890601.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41254 + ... + 47493.

Almost surely, 2^276890640 is an apocalyptic number.

276890640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

276890640 is an abundant number, since it is smaller than the sum of its proper divisors (647508528).

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

276890640 is a wasteful number, since it uses less digits than its factorization.

276890640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88776 (or 88770 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 276890640 is about 16640.0312499707. The cubic root of 276890640 is about 651.7825940313.

The spelling of 276890640 in words is "two hundred seventy-six million, eight hundred ninety thousand, six hundred forty".