2372721 has 16 divisors (see below), whose sum is σ = 3452736. Its totient is φ = 1440576.

The previous prime is 2372687. The next prime is 2372731. The reversal of 2372721 is 1272732.

It is not a de Polignac number, because 2372721 - 2¹¹ = 2370673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2372691 and 2372700.

It is not an unprimeable number, because it can be changed into a prime (2372731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2871 + ... + 3603.

It is an arithmetic number, because the mean of its divisors is an integer number (215796).

2^2372721 is an apocalyptic number.

It is an amenable number.

2372721 is a deficient number, since it is larger than the sum of its proper divisors (1080015).

2372721 is a wasteful number, since it uses less digits than its factorization.

2372721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832.

The product of its digits is 1176, while the sum is 24.

The square root of 2372721 is about 1540.3639180401. The cubic root of 2372721 is about 133.3773930778.

The spelling of 2372721 in words is "two million, three hundred seventy-two thousand, seven hundred twenty-one".