276394140 has 384 divisors, whose sum is σ = 1032192000. Its totient is φ = 60652800.

The previous prime is 276394117. The next prime is 276394141. The reversal of 276394140 is 41493672.

276394140 is a `hidden beast` number, since 2 + 7 + 639 + 4 + 14 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 276394095 and 276394104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276394141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3498621 + ... + 3498699.

It is an arithmetic number, because the mean of its divisors is an integer number (2688000).

Almost surely, 2^276394140 is an apocalyptic number.

276394140 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 276394140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (516096000).

276394140 is an abundant number, since it is smaller than the sum of its proper divisors (755797860).

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

276394140 is a wasteful number, since it uses less digits than its factorization.

276394140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158 (or 150 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 276394140 is about 16625.1057139496. The cubic root of 276394140 is about 651.3927846882.

The spelling of 276394140 in words is "two hundred seventy-six million, three hundred ninety-four thousand, one hundred forty".