2152709 has 8 divisors (see below), whose sum is σ = 2372832. Its totient is φ = 1940400.

The previous prime is 2152691. The next prime is 2152729. The reversal of 2152709 is 9072512.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152729) 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, 1367 + ... + 2484.

It is an arithmetic number, because the mean of its divisors is an integer number (296604).

2^2152709 is an apocalyptic number.

It is an amenable number.

2152709 is a deficient number, since it is larger than the sum of its proper divisors (220123).

2152709 is a wasteful number, since it uses less digits than its factorization.

2152709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3907.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2152709 is about 1467.2113003927. The cubic root of 2152709 is about 129.1204731570.

The spelling of 2152709 in words is "two million, one hundred fifty-two thousand, seven hundred nine".