2888820 has 72 divisors (see below), whose sum is σ = 9565920. Its totient is φ = 699840.

The previous prime is 2888807. The next prime is 2888843. The reversal of 2888820 is 288882.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is an Ulam number.

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, 1251 + ... + 2709.

It is an arithmetic number, because the mean of its divisors is an integer number (132860).

2^2888820 is an apocalyptic number.

2888820 is a gapful number since it is divisible by the number (20) 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 2888820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4782960).

2888820 is an abundant number, since it is smaller than the sum of its proper divisors (6677100).

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

2888820 is a wasteful number, since it uses less digits than its factorization.

2888820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1485 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 36.

The square root of 2888820 is about 1699.6529057428. The cubic root of 2888820 is about 142.4208239756.

The spelling of 2888820 in words is "two million, eight hundred eighty-eight thousand, eight hundred twenty".