4545438 has 16 divisors (see below), whose sum is σ = 9161856. Its totient is φ = 1503320.

The previous prime is 4545433. The next prime is 4545449. The reversal of 4545438 is 8345454.

It is a super-2 number, since 2×4545438² = 41322013223688, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4545399 and 4545408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4545433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106 + ... + 3677.

It is an arithmetic number, because the mean of its divisors is an integer number (572616).

Almost surely, 2^4545438 is an apocalyptic number.

4545438 is an abundant number, since it is smaller than the sum of its proper divisors (4616418).

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

4545438 is a wasteful number, since it uses less digits than its factorization.

4545438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5919.

The product of its digits is 38400, while the sum is 33.

The square root of 4545438 is about 2132.0032832995. The cubic root of 4545438 is about 165.6501802466.

The spelling of 4545438 in words is "four million, five hundred forty-five thousand, four hundred thirty-eight".