2865920 has 36 divisors (see below), whose sum is σ = 6867840. Its totient is φ = 1145856.

The previous prime is 2865917. The next prime is 2865923. The reversal of 2865920 is 295682.

It is an interprime number because it is at equal distance from previous prime (2865917) and next prime (2865923).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2865923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161 + ... + 2399.

2^2865920 is an apocalyptic number.

2865920 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 2865920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3433920).

2865920 is an abundant number, since it is smaller than the sum of its proper divisors (4001920).

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

2865920 is an equidigital number, since it uses as much as digits as its factorization.

2865920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2260 (or 2246 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2865920 is about 1692.9028324154. The cubic root of 2865920 is about 142.0434965606.

The spelling of 2865920 in words is "two million, eight hundred sixty-five thousand, nine hundred twenty".