4527978 has 32 divisors (see below), whose sum is σ = 11147136. Its totient is φ = 1194048.

The previous prime is 4527937. The next prime is 4527979. The reversal of 4527978 is 8797254.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (4527979) 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 15 ways as a sum of consecutive naturals, for example, 3601 + ... + 4692.

It is an arithmetic number, because the mean of its divisors is an integer number (348348).

Almost surely, 2^4527978 is an apocalyptic number.

4527978 is an abundant number, since it is smaller than the sum of its proper divisors (6619158).

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

4527978 is a wasteful number, since it uses less digits than its factorization.

4527978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8318.

The product of its digits is 141120, while the sum is 42.

The square root of 4527978 is about 2127.9046031249. The cubic root of 4527978 is about 165.4378088299.

The spelling of 4527978 in words is "four million, five hundred twenty-seven thousand, nine hundred seventy-eight".