249273378 has 12 divisors (see below), whose sum is σ = 540092358. Its totient is φ = 83091120.

The previous prime is 249273377. The next prime is 249273391. The reversal of 249273378 is 873372942.

249273378 is a `hidden beast` number, since 2 + 4 + 9 + 273 + 378 = 666.

It can be written as a sum of positive squares in only one way, i.e., 238795209 + 10478169 = 15453^2 + 3237^2 .

It is not an unprimeable number, because it can be changed into a prime (249273377) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6924243 + ... + 6924278.

Almost surely, 2^249273378 is an apocalyptic number.

249273378 is an abundant number, since it is smaller than the sum of its proper divisors (290818980).

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

249273378 is a wasteful number, since it uses less digits than its factorization.

249273378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13848529 (or 13848526 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 249273378 is about 15788.3937751755. The cubic root of 249273378 is about 629.3496084554.

The spelling of 249273378 in words is "two hundred forty-nine million, two hundred seventy-three thousand, three hundred seventy-eight".