2628507856 has 80 divisors (see below), whose sum is σ = 5697635328. Its totient is φ = 1166515200.

The previous prime is 2628507839. The next prime is 2628507877. The reversal of 2628507856 is 6587058262.

2628507856 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1075596 + ... + 1078036.

Almost surely, 2^2628507856 is an apocalyptic number.

2628507856 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2628507856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2848817664).

2628507856 is an abundant number, since it is smaller than the sum of its proper divisors (3069127472).

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

2628507856 is a wasteful number, since it uses less digits than its factorization.

2628507856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2660 (or 2654 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 49.

The square root of 2628507856 is about 51268.9755700268. The cubic root of 2628507856 is about 1380.0762850779.

The spelling of 2628507856 in words is "two billion, six hundred twenty-eight million, five hundred seven thousand, eight hundred fifty-six".