2102578 has 8 divisors (see below), whose sum is σ = 3319920. Its totient is φ = 995940.

The previous prime is 2102567. The next prime is 2102579. The reversal of 2102578 is 8752012.

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

It is not an unprimeable number, because it can be changed into a prime (2102579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27628 + ... + 27703.

It is an arithmetic number, because the mean of its divisors is an integer number (414990).

2^2102578 is an apocalyptic number.

2102578 is a deficient number, since it is larger than the sum of its proper divisors (1217342).

2102578 is a wasteful number, since it uses less digits than its factorization.

2102578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55352.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 2102578 is about 1450.0268963023. The cubic root of 2102578 is about 128.1102971826.

The spelling of 2102578 in words is "two million, one hundred two thousand, five hundred seventy-eight".