276394240 has 72 divisors (see below), whose sum is σ = 666266328. Its totient is φ = 109854720.

The previous prime is 276394231. The next prime is 276394241. The reversal of 276394240 is 42493672.

276394240 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 36864 + 276357376 = 192^2 + 16624^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 276394240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276394241) 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, 231084 + ... + 232276.

It is an arithmetic number, because the mean of its divisors is an integer number (9253699).

Almost surely, 2^276394240 is an apocalyptic number.

276394240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 276394240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (333133164).

276394240 is an abundant number, since it is smaller than the sum of its proper divisors (389872088).

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

276394240 is a wasteful number, since it uses less digits than its factorization.

276394240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1395 (or 1381 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 276394240 is about 16625.1087214490. The cubic root of 276394240 is about 651.3928632466.

The spelling of 276394240 in words is "two hundred seventy-six million, three hundred ninety-four thousand, two hundred forty".