7223528 has 16 divisors (see below), whose sum is σ = 14586180. Its totient is φ = 3333888.

The previous prime is 7223519. The next prime is 7223533. The reversal of 7223528 is 8253227.

It can be written as a sum of positive squares in 2 ways, for example, as 6061444 + 1162084 = 2462^2 + 1078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 7223528.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34625 + ... + 34832.

Almost surely, 2^7223528 is an apocalyptic number.

It is an amenable number.

7223528 is an abundant number, since it is smaller than the sum of its proper divisors (7362652).

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

7223528 is a wasteful number, since it uses less digits than its factorization.

7223528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69476 (or 69472 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 7223528 is about 2687.6621811530. The cubic root of 7223528 is about 193.3079818787.

It can be divided in two parts, 722 and 3528, that multiplied together give a square (2547216 = 1596²).

The spelling of 7223528 in words is "seven million, two hundred twenty-three thousand, five hundred twenty-eight".