276404345 has 12 divisors (see below), whose sum is σ = 385838244. Its totient is φ = 189534240.

The previous prime is 276404341. The next prime is 276404347. The reversal of 276404345 is 543404672.

It can be written as a sum of positive squares in 2 ways, for example, as 61136761 + 215267584 = 7819^2 + 14672^2 .

It is not a de Polignac number, because 276404345 - 2² = 276404341 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (276404341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 563846 + ... + 564335.

It is an arithmetic number, because the mean of its divisors is an integer number (32153187).

Almost surely, 2^276404345 is an apocalyptic number.

It is an amenable number.

276404345 is a deficient number, since it is larger than the sum of its proper divisors (109433899).

276404345 is a wasteful number, since it uses less digits than its factorization.

276404345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128200 (or 1128193 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 276404345 is about 16625.4126264583. The cubic root of 276404345 is about 651.4008014785.

The spelling of 276404345 in words is "two hundred seventy-six million, four hundred four thousand, three hundred forty-five".