2717920 has 24 divisors (see below), whose sum is σ = 6421464. Its totient is φ = 1087104.

The previous prime is 2717903. The next prime is 2717921. The reversal of 2717920 is 297172.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2717921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8334 + ... + 8653.

It is an arithmetic number, because the mean of its divisors is an integer number (267561).

2^2717920 is an apocalyptic number.

2717920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2717920 is an abundant number, since it is smaller than the sum of its proper divisors (3703544).

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

2717920 is a wasteful number, since it uses less digits than its factorization.

2717920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17002 (or 16994 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 2717920 is about 1648.6115370214. The cubic root of 2717920 is about 139.5550499363. Note that the first 3 decimals are identical.

The spelling of 2717920 in words is "two million, seven hundred seventeen thousand, nine hundred twenty".