2840172 has 12 divisors (see below), whose sum is σ = 6627096. Its totient is φ = 946720.

The previous prime is 2840171. The next prime is 2840179. The reversal of 2840172 is 2710482.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2840171) 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, 118329 + ... + 118352.

It is an arithmetic number, because the mean of its divisors is an integer number (552258).

2^2840172 is an apocalyptic number.

It is an amenable number.

2840172 is an abundant number, since it is smaller than the sum of its proper divisors (3786924).

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

2840172 is a wasteful number, since it uses less digits than its factorization.

2840172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236688 (or 236686 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 2840172 is about 1685.2809854739. The cubic root of 2840172 is about 141.6168338377.

The spelling of 2840172 in words is "two million, eight hundred forty thousand, one hundred seventy-two".