2856620 has 24 divisors (see below), whose sum is σ = 6460944. Its totient is φ = 1054656.

The previous prime is 2856617. The next prime is 2856653. The reversal of 2856620 is 266582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5234 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (269206).

2^2856620 is an apocalyptic number.

2856620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2856620 is an abundant number, since it is smaller than the sum of its proper divisors (3604324).

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

2856620 is a wasteful number, since it uses less digits than its factorization.

2856620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11009 (or 11007 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 2856620 is about 1690.1538391519. The cubic root of 2856620 is about 141.8896848702.

The spelling of 2856620 in words is "two million, eight hundred fifty-six thousand, six hundred twenty".