4537890 has 96 divisors (see below), whose sum is σ = 14117760. Its totient is φ = 1037232.

The previous prime is 4537853. The next prime is 4537909. The reversal of 4537890 is 987354.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 648267 + ... + 648273.

It is an arithmetic number, because the mean of its divisors is an integer number (147060).

Almost surely, 2^4537890 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4537890, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7058880).

4537890 is an abundant number, since it is smaller than the sum of its proper divisors (9579870).

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

4537890 is an frugal number, since it uses more digits than its factorization.

4537890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 4537890 is about 2130.2323816898. The cubic root of 4537890 is about 165.5584384252.

Multiplying 4537890 by its product of nonzero digits (30240), we get a square (137225793600 = 370440²).

The spelling of 4537890 in words is "four million, five hundred thirty-seven thousand, eight hundred ninety".