245980878 has 128 divisors (see below), whose sum is σ = 619315200. Its totient is φ = 64022400.

The previous prime is 245980831. The next prime is 245980879. The reversal of 245980878 is 878089542.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 245980878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245980879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1287763 + ... + 1287953.

It is an arithmetic number, because the mean of its divisors is an integer number (4838400).

Almost surely, 2^245980878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245980878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309657600).

245980878 is an abundant number, since it is smaller than the sum of its proper divisors (373334322).

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

245980878 is a wasteful number, since it uses less digits than its factorization.

245980878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318.

The product of its (nonzero) digits is 1290240, while the sum is 51.

The square root of 245980878 is about 15683.7775424162. Note that the first 3 decimals coincide. The cubic root of 245980878 is about 626.5664200719.

The spelling of 245980878 in words is "two hundred forty-five million, nine hundred eighty thousand, eight hundred seventy-eight".