4556440 has 32 divisors (see below), whose sum is σ = 11717280. Its totient is φ = 1562112.

The previous prime is 4556437. The next prime is 4556467. The reversal of 4556440 is 446554.

It is a super-2 number, since 2×4556440² = 41522290947200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 4556399 and 4556408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7857 + ... + 8416.

It is an arithmetic number, because the mean of its divisors is an integer number (366165).

Almost surely, 2^4556440 is an apocalyptic number.

4556440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4556440 is an abundant number, since it is smaller than the sum of its proper divisors (7160840).

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

4556440 is a wasteful number, since it uses less digits than its factorization.

4556440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16291 (or 16287 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 4556440 is about 2134.5819262797. The cubic root of 4556440 is about 165.7837218216.

The spelling of 4556440 in words is "four million, five hundred fifty-six thousand, four hundred forty".