245574378 has 72 divisors (see below), whose sum is σ = 640357380. Its totient is φ = 67737600.

The previous prime is 245574361. The next prime is 245574391. The reversal of 245574378 is 873475542.

245574378 is a `hidden beast` number, since 2 + 4 + 5 + 574 + 3 + 78 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 239537529 + 6036849 = 15477^2 + 2457^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 20778 + ... + 30378.

Almost surely, 2^245574378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245574378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320178690).

245574378 is an abundant number, since it is smaller than the sum of its proper divisors (394783002).

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

245574378 is a wasteful number, since it uses less digits than its factorization.

245574378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9652 (or 9642 counting only the distinct ones).

The product of its digits is 940800, while the sum is 45.

The square root of 245574378 is about 15670.8129336037. The cubic root of 245574378 is about 626.2210820070.

The spelling of 245574378 in words is "two hundred forty-five million, five hundred seventy-four thousand, three hundred seventy-eight".