4578990 has 64 divisors (see below), whose sum is σ = 12096000. Its totient is φ = 1102464.

The previous prime is 4578989. The next prime is 4578991. The reversal of 4578990 is 998754.

It is an interprime number because it is at equal distance from previous prime (4578989) and next prime (4578991).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4578991) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22911 + ... + 23109.

It is an arithmetic number, because the mean of its divisors is an integer number (189000).

Almost surely, 2^4578990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4578990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6048000).

4578990 is an abundant number, since it is smaller than the sum of its proper divisors (7517010).

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

4578990 is a wasteful number, since it uses less digits than its factorization.

4578990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 4578990 is about 2139.8574718892. The cubic root of 4578990 is about 166.0567619309.

The spelling of 4578990 in words is "four million, five hundred seventy-eight thousand, nine hundred ninety".