2872240 has 80 divisors (see below), whose sum is σ = 7999488. Its totient is φ = 937728.

The previous prime is 2872237. The next prime is 2872277. The reversal of 2872240 is 422782.

2872240 is digitally balanced in base 5, 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 (80).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12769 + ... + 12991.

2^2872240 is an apocalyptic number.

2872240 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 2872240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3999744).

2872240 is an abundant number, since it is smaller than the sum of its proper divisors (5127248).

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

2872240 is a wasteful number, since it uses less digits than its factorization.

2872240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 260 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 2872240 is about 1694.7684207584. The cubic root of 2872240 is about 142.1478325525.

The spelling of 2872240 in words is "two million, eight hundred seventy-two thousand, two hundred forty".