4891778 has 32 divisors (see below), whose sum is σ = 8380800. Its totient is φ = 2128896.

The previous prime is 4891763. The next prime is 4891781. The reversal of 4891778 is 8771984.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25250 + ... + 25442.

It is an arithmetic number, because the mean of its divisors is an integer number (261900).

Almost surely, 2^4891778 is an apocalyptic number.

4891778 is a deficient number, since it is larger than the sum of its proper divisors (3489022).

4891778 is a wasteful number, since it uses less digits than its factorization.

4891778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266.

The product of its digits is 112896, while the sum is 44.

The square root of 4891778 is about 2211.7364219093. The cubic root of 4891778 is about 169.7548716250.

The spelling of 4891778 in words is "four million, eight hundred ninety-one thousand, seven hundred seventy-eight".