2898721 has 8 divisors (see below), whose sum is σ = 3507840. Its totient is φ = 2338368.

The previous prime is 2898683. The next prime is 2898733. The reversal of 2898721 is 1278982.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2898721 - 2¹³ = 2890529 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2898761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12061 + ... + 12298.

It is an arithmetic number, because the mean of its divisors is an integer number (438480).

2^2898721 is an apocalyptic number.

It is an amenable number.

2898721 is a deficient number, since it is larger than the sum of its proper divisors (609119).

2898721 is a wasteful number, since it uses less digits than its factorization.

2898721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24383.

The product of its digits is 16128, while the sum is 37.

The square root of 2898721 is about 1702.5630678480. The cubic root of 2898721 is about 142.5833471581.

The spelling of 2898721 in words is "two million, eight hundred ninety-eight thousand, seven hundred twenty-one".