2154729 has 8 divisors (see below), whose sum is σ = 2972160. Its totient is φ = 1386896.

The previous prime is 2154727. The next prime is 2154731. The reversal of 2154729 is 9274512.

It is an interprime number because it is at equal distance from previous prime (2154727) and next prime (2154731).

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

It is not a de Polignac number, because 2154729 - 2¹ = 2154727 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2154696 and 2154705.

It is not an unprimeable number, because it can be changed into a prime (2154727) 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, 12297 + ... + 12470.

It is an arithmetic number, because the mean of its divisors is an integer number (371520).

2^2154729 is an apocalyptic number.

2154729 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2154729 is a deficient number, since it is larger than the sum of its proper divisors (817431).

2154729 is a wasteful number, since it uses less digits than its factorization.

2154729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24799.

The product of its digits is 5040, while the sum is 30.

The square root of 2154729 is about 1467.8995197220. The cubic root of 2154729 is about 129.1608473734.

The spelling of 2154729 in words is "two million, one hundred fifty-four thousand, seven hundred twenty-nine".