2604890 has 8 divisors (see below), whose sum is σ = 4688820. Its totient is φ = 1041952.

The previous prime is 2604887. The next prime is 2604907. The reversal of 2604890 is 984062.

It can be written as a sum of positive squares in 2 ways, for example, as 2301289 + 303601 = 1517^2 + 551^2 .

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

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130235 + ... + 130254.

2^2604890 is an apocalyptic number.

2604890 is a deficient number, since it is larger than the sum of its proper divisors (2083930).

2604890 is a wasteful number, since it uses less digits than its factorization.

2604890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260496.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 2604890 is about 1613.9671619956. The cubic root of 2604890 is about 137.5930389596.

The spelling of 2604890 in words is "two million, six hundred four thousand, eight hundred ninety".