2865144 has 32 divisors (see below), whose sum is σ = 7395840. Its totient is φ = 924000.

The previous prime is 2865131. The next prime is 2865157. The reversal of 2865144 is 4415682.

It is an interprime number because it is at equal distance from previous prime (2865131) and next prime (2865157).

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 1182 + ... + 2669.

It is an arithmetic number, because the mean of its divisors is an integer number (231120).

2^2865144 is an apocalyptic number.

2865144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2865144 is an abundant number, since it is smaller than the sum of its proper divisors (4530696).

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

2865144 is a wasteful number, since it uses less digits than its factorization.

2865144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3891 (or 3887 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 2865144 is about 1692.6736247724. The cubic root of 2865144 is about 142.0306751161.

The spelling of 2865144 in words is "two million, eight hundred sixty-five thousand, one hundred forty-four".