4778750 has 20 divisors (see below), whose sum is σ = 8959632. Its totient is φ = 1911000.

The previous prime is 4778731. The next prime is 4778759. The reversal of 4778750 is 578774.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4778759) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 662 + ... + 3161.

Almost surely, 2^4778750 is an apocalyptic number.

4778750 is a deficient number, since it is larger than the sum of its proper divisors (4180882).

4778750 is an equidigital number, since it uses as much as digits as its factorization.

4778750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845 (or 3830 counting only the distinct ones).

The product of its (nonzero) digits is 54880, while the sum is 38.

The square root of 4778750 is about 2186.0352238699. The cubic root of 4778750 is about 168.4372350302.

The spelling of 4778750 in words is "four million, seven hundred seventy-eight thousand, seven hundred fifty".