4258440 has 64 divisors (see below), whose sum is σ = 14198400. Its totient is φ = 1135296.

The previous prime is 4258411. The next prime is 4258459. The reversal of 4258440 is 448524.

4258440 is a `hidden beast` number, since 42 + 584 + 40 = 666.

It is a super-2 number, since 2×4258440² = 36268622467200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 892 + ... + 3051.

It is an arithmetic number, because the mean of its divisors is an integer number (221850).

Almost surely, 2^4258440 is an apocalyptic number.

4258440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4258440 is an abundant number, since it is smaller than the sum of its proper divisors (9939960).

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

4258440 is a wasteful number, since it uses less digits than its factorization.

4258440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

The square root of 4258440 is about 2063.5987982164. The cubic root of 4258440 is about 162.0877439619.

It can be divided in two parts, 42584 and 40, that added together give a palindrome (42624).

The spelling of 4258440 in words is "four million, two hundred fifty-eight thousand, four hundred forty".