5781890 has 16 divisors (see below), whose sum is σ = 10955520. Its totient is φ = 2190960.

The previous prime is 5781889. The next prime is 5781911. The reversal of 5781890 is 981875.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15026 + ... + 15405.

It is an arithmetic number, because the mean of its divisors is an integer number (684720).

Almost surely, 2^5781890 is an apocalyptic number.

5781890 is a deficient number, since it is larger than the sum of its proper divisors (5173630).

5781890 is a wasteful number, since it uses less digits than its factorization.

5781890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30457.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 5781890 is about 2404.5560920885. The cubic root of 5781890 is about 179.4829813967.

The spelling of 5781890 in words is "five million, seven hundred eighty-one thousand, eight hundred ninety".