276628427 has 2 divisors, whose sum is σ = 276628428. Its totient is φ = 276628426.

The previous prime is 276628393. The next prime is 276628433. The reversal of 276628427 is 724826672.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 276628427 - 2¹⁴ = 276612043 is a prime.

It is not a weakly prime, because it can be changed into another prime (276628447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 138314213 + 138314214.

It is an arithmetic number, because the mean of its divisors is an integer number (138314214).

Almost surely, 2^276628427 is an apocalyptic number.

276628427 is a deficient number, since it is larger than the sum of its proper divisors (1).

276628427 is an equidigital number, since it uses as much as digits as its factorization.

276628427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 44.

The square root of 276628427 is about 16632.1504021579. The cubic root of 276628427 is about 651.5767849238.

The spelling of 276628427 in words is "two hundred seventy-six million, six hundred twenty-eight thousand, four hundred twenty-seven".