7204428 has 144 divisors (see below), whose sum is σ = 23901696. Its totient is φ = 1774080.

The previous prime is 7204427. The next prime is 7204471. The reversal of 7204428 is 8244027.

7204428 is a modest number, since divided by 4428 gives 72 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7204423) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 63700 + ... + 63812.

It is an arithmetic number, because the mean of its divisors is an integer number (165984).

Almost surely, 2^7204428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7204428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11950848).

7204428 is an abundant number, since it is smaller than the sum of its proper divisors (16697268).

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

7204428 is a wasteful number, since it uses less digits than its factorization.

7204428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 27.

The square root of 7204428 is about 2684.1065552619. The cubic root of 7204428 is about 193.1374538737.

The spelling of 7204428 in words is "seven million, two hundred four thousand, four hundred twenty-eight".