245238978 has 16 divisors (see below), whose sum is σ = 490682880. Its totient is φ = 81712176.

The previous prime is 245238941. The next prime is 245239031. The reversal of 245238978 is 879832542.

245238978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10176 + ... + 24372.

It is an arithmetic number, because the mean of its divisors is an integer number (30667680).

Almost surely, 2^245238978 is an apocalyptic number.

245238978 is an abundant number, since it is smaller than the sum of its proper divisors (245443902).

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

245238978 is a wasteful number, since it uses less digits than its factorization.

245238978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17081.

The product of its digits is 967680, while the sum is 48.

The square root of 245238978 is about 15660.1078540347. The cubic root of 245238978 is about 625.9358591953.

The spelling of 245238978 in words is "two hundred forty-five million, two hundred thirty-eight thousand, nine hundred seventy-eight".