2861020 has 24 divisors (see below), whose sum is σ = 6325200. Its totient is φ = 1084032.

The previous prime is 2861009. The next prime is 2861041. The reversal of 2861020 is 201682.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 3385 + ... + 4144.

It is an arithmetic number, because the mean of its divisors is an integer number (263550).

2^2861020 is an apocalyptic number.

2861020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2861020 is an abundant number, since it is smaller than the sum of its proper divisors (3464180).

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

2861020 is a wasteful number, since it uses less digits than its factorization.

2861020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7557 (or 7555 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 2861020 is about 1691.4549949674. The cubic root of 2861020 is about 141.9624975354.

The spelling of 2861020 in words is "two million, eight hundred sixty-one thousand, twenty".