276742389 has 64 divisors (see below), whose sum is σ = 481536000. Its totient is φ = 137168640.

The previous prime is 276742379. The next prime is 276742397. The reversal of 276742389 is 983247672.

It is not a de Polignac number, because 276742389 - 2⁴ = 276742373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (276742369) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 730002 + ... + 730380.

It is an arithmetic number, because the mean of its divisors is an integer number (7524000).

Almost surely, 2^276742389 is an apocalyptic number.

276742389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

276742389 is a deficient number, since it is larger than the sum of its proper divisors (204793611).

276742389 is a wasteful number, since it uses less digits than its factorization.

276742389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538.

The product of its digits is 1016064, while the sum is 48.

The square root of 276742389 is about 16635.5760044550. The cubic root of 276742389 is about 651.6662488541. Note that the first 3 decimals are identical.

The spelling of 276742389 in words is "two hundred seventy-six million, seven hundred forty-two thousand, three hundred eighty-nine".