4394520 has 128 divisors (see below), whose sum is σ = 15825600. Its totient is φ = 1078272.

The previous prime is 4394473. The next prime is 4394561. The reversal of 4394520 is 254934.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13884 + ... + 14196.

Almost surely, 2^4394520 is an apocalyptic number.

4394520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4394520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7912800).

4394520 is an abundant number, since it is smaller than the sum of its proper divisors (11431080).

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

4394520 is a wasteful number, since it uses less digits than its factorization.

4394520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346 (or 336 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 4394520 is about 2096.3110456228. The cubic root of 4394520 is about 163.7961973651.

The spelling of 4394520 in words is "four million, three hundred ninety-four thousand, five hundred twenty".