2847920 has 40 divisors (see below), whose sum is σ = 6707904. Its totient is φ = 1124352.

The previous prime is 2847917. The next prime is 2847931. The reversal of 2847920 is 297482.

2847920 = T₁₉₄ + T₁₉₅ + ... + T₂₈₉.

2847920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×2847920² = 16221296652800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7577 + ... + 7943.

2^2847920 is an apocalyptic number.

2847920 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 2847920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3353952).

2847920 is an abundant number, since it is smaller than the sum of its proper divisors (3859984).

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

2847920 is a wasteful number, since it uses less digits than its factorization.

2847920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 2847920 is about 1687.5781463387. The cubic root of 2847920 is about 141.7454940002.

The spelling of 2847920 in words is "two million, eight hundred forty-seven thousand, nine hundred twenty".