2578565280 has 48 divisors (see below), whose sum is σ = 8122482144. Its totient is φ = 687617280.

The previous prime is 2578565263. The next prime is 2578565329. The reversal of 2578565280 is 825658752.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2685526 + ... + 2686485.

It is an arithmetic number, because the mean of its divisors is an integer number (169218378).

Almost surely, 2^2578565280 is an apocalyptic number.

2578565280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2578565280 is an abundant number, since it is smaller than the sum of its proper divisors (5543916864).

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

2578565280 is a wasteful number, since it uses less digits than its factorization.

2578565280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5372029 (or 5372021 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The square root of 2578565280 is about 50779.5754216201. The cubic root of 2578565280 is about 1371.2796894431.

The spelling of 2578565280 in words is "two billion, five hundred seventy-eight million, five hundred sixty-five thousand, two hundred eighty".