4881978 has 16 divisors (see below), whose sum is σ = 10848960. Its totient is φ = 1627308.

The previous prime is 4881967. The next prime is 4881979. The reversal of 4881978 is 8791884.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (4881979) 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, 45150 + ... + 45257.

It is an arithmetic number, because the mean of its divisors is an integer number (678060).

Almost surely, 2^4881978 is an apocalyptic number.

4881978 is an abundant number, since it is smaller than the sum of its proper divisors (5966982).

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

4881978 is a wasteful number, since it uses less digits than its factorization.

4881978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90418 (or 90412 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The square root of 4881978 is about 2209.5198573446. The cubic root of 4881978 is about 169.6414357121.

The spelling of 4881978 in words is "four million, eight hundred eighty-one thousand, nine hundred seventy-eight".