2528885646 has 48 divisors (see below), whose sum is σ = 6279852384. Its totient is φ = 720479232.

The previous prime is 2528885629. The next prime is 2528885659. The reversal of 2528885646 is 6465888252.

It is a happy number.

It is a super-2 number, since 2×2528885646² = 12790525221089674632, which contains 22 as substring.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2528885592 and 2528885601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16050 + ... + 72906.

It is an arithmetic number, because the mean of its divisors is an integer number (130830258).

Almost surely, 2^2528885646 is an apocalyptic number.

2528885646 is an abundant number, since it is smaller than the sum of its proper divisors (3750966738).

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

2528885646 is a wasteful number, since it uses less digits than its factorization.

2528885646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57225 (or 57222 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 54.

The square root of 2528885646 is about 50288.0268652489. The cubic root of 2528885646 is about 1362.4159848989.

The spelling of 2528885646 in words is "two billion, five hundred twenty-eight million, eight hundred eighty-five thousand, six hundred forty-six".