4247778 has 16 divisors (see below), whose sum is σ = 8865216. Its totient is φ = 1354320.

The previous prime is 4247777. The next prime is 4247809. The reversal of 4247778 is 8777424.

It is not an unprimeable number, because it can be changed into a prime (4247777) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15253 + ... + 15528.

It is an arithmetic number, because the mean of its divisors is an integer number (554076).

Almost surely, 2^4247778 is an apocalyptic number.

4247778 is an abundant number, since it is smaller than the sum of its proper divisors (4617438).

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

4247778 is a wasteful number, since it uses less digits than its factorization.

4247778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30809.

The product of its digits is 87808, while the sum is 39.

The square root of 4247778 is about 2061.0138281923. The cubic root of 4247778 is about 161.9523560549.

The spelling of 4247778 in words is "four million, two hundred forty-seven thousand, seven hundred seventy-eight".