2580520428 has 36 divisors (see below), whose sum is σ = 6544257720. Its totient is φ = 857367936.

The previous prime is 2580520417. The next prime is 2580520433. The reversal of 2580520428 is 8240250852.

2580520428 is a `hidden beast` number, since 2 + 580 + 52 + 0 + 4 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2580520392 and 2580520401.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105693 + ... + 127796.

Almost surely, 2^2580520428 is an apocalyptic number.

It is an amenable number.

2580520428 is an abundant number, since it is smaller than the sum of its proper divisors (3963737292).

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

2580520428 is a wasteful number, since it uses less digits than its factorization.

2580520428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233806 (or 233801 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The square root of 2580520428 is about 50798.8230966033. The cubic root of 2580520428 is about 1371.6261841171.

The spelling of 2580520428 in words is "two billion, five hundred eighty million, five hundred twenty thousand, four hundred twenty-eight".