2880861 has 8 divisors (see below), whose sum is σ = 3965184. Its totient is φ = 1858560.

The previous prime is 2880859. The next prime is 2880863. The reversal of 2880861 is 1680882.

It is an interprime number because it is at equal distance from previous prime (2880859) and next prime (2880863).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2880861 - 2¹ = 2880859 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2880863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15396 + ... + 15581.

It is an arithmetic number, because the mean of its divisors is an integer number (495648).

2^2880861 is an apocalyptic number.

It is an amenable number.

2880861 is a deficient number, since it is larger than the sum of its proper divisors (1084323).

2880861 is a wasteful number, since it uses less digits than its factorization.

2880861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31011.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 2880861 is about 1697.3099304488. The cubic root of 2880861 is about 142.2899089389.

It can be divided in two parts, 2880 and 861, that added together give a triangular number (3741 = T₈₆).

The spelling of 2880861 in words is "two million, eight hundred eighty thousand, eight hundred sixty-one".