2972720 has 20 divisors (see below), whose sum is σ = 6911760. Its totient is φ = 1189056.

The previous prime is 2972701. The next prime is 2972729. The reversal of 2972720 is 272792.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (2972729) 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, 18500 + ... + 18659.

It is an arithmetic number, because the mean of its divisors is an integer number (345588).

2^2972720 is an apocalyptic number.

2972720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2972720 is an abundant number, since it is smaller than the sum of its proper divisors (3939040).

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

2972720 is a wasteful number, since it uses less digits than its factorization.

2972720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37172 (or 37166 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 29.

The square root of 2972720 is about 1724.1577654032. The cubic root of 2972720 is about 143.7864633398.

The spelling of 2972720 in words is "two million, nine hundred seventy-two thousand, seven hundred twenty".