4512440 has 32 divisors (see below), whose sum is σ = 10266480. Its totient is φ = 1784832.

The previous prime is 4512427. The next prime is 4512449. The reversal of 4512440 is 442154.

It is a super-2 number, since 2×4512440² = 40724229507200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4512449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3299 + ... + 4461.

Almost surely, 2^4512440 is an apocalyptic number.

4512440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4512440 is an abundant number, since it is smaller than the sum of its proper divisors (5754040).

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

4512440 is a wasteful number, since it uses less digits than its factorization.

4512440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1271 (or 1267 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 4512440 is about 2124.2504560433. The cubic root of 4512440 is about 165.2483557123.

Adding to 4512440 its reverse (442154), we get a palindrome (4954594).

The spelling of 4512440 in words is "four million, five hundred twelve thousand, four hundred forty".