2861538 has 16 divisors (see below), whose sum is σ = 5796480. Its totient is φ = 941616.

The previous prime is 2861531. The next prime is 2861539. The reversal of 2861538 is 8351682.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2861499 and 2861508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861531) 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, 2545 + ... + 3492.

It is an arithmetic number, because the mean of its divisors is an integer number (362280).

2^2861538 is an apocalyptic number.

2861538 is an abundant number, since it is smaller than the sum of its proper divisors (2934942).

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

2861538 is a wasteful number, since it uses less digits than its factorization.

2861538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121.

The product of its digits is 11520, while the sum is 33.

The square root of 2861538 is about 1691.6081106450. The cubic root of 2861538 is about 141.9710646590.

The spelling of 2861538 in words is "two million, eight hundred sixty-one thousand, five hundred thirty-eight".