4561890 has 16 divisors (see below), whose sum is σ = 10948608. Its totient is φ = 1216496.

The previous prime is 4561883. The next prime is 4561891. The reversal of 4561890 is 981654.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (4561891) 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, 76002 + ... + 76061.

It is an arithmetic number, because the mean of its divisors is an integer number (684288).

Almost surely, 2^4561890 is an apocalyptic number.

4561890 is an abundant number, since it is smaller than the sum of its proper divisors (6386718).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4561890 is a wasteful number, since it uses less digits than its factorization.

4561890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152073.

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 4561890 is about 2135.8581413568. The cubic root of 4561890 is about 165.8497939661.

It can be divided in two parts, 456 and 1890, that added together give a triangular number (2346 = T₆₈).

The spelling of 4561890 in words is "four million, five hundred sixty-one thousand, eight hundred ninety".