4557390 has 32 divisors (see below), whose sum is σ = 11092896. Its totient is φ = 1198080.

The previous prime is 4557373. The next prime is 4557391. The reversal of 4557390 is 937554.

It is a super-2 number, since 2×4557390² = 41539607224200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4557391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1150 + ... + 3230.

It is an arithmetic number, because the mean of its divisors is an integer number (346653).

Almost surely, 2^4557390 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4557390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5546448).

4557390 is an abundant number, since it is smaller than the sum of its proper divisors (6535506).

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

4557390 is a wasteful number, since it uses less digits than its factorization.

4557390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164.

The product of its (nonzero) digits is 18900, while the sum is 33.

The square root of 4557390 is about 2134.8044406924. The cubic root of 4557390 is about 165.7952427744.

The spelling of 4557390 in words is "four million, five hundred fifty-seven thousand, three hundred ninety".