1220528 has 10 divisors (see below), whose sum is σ = 2364804. Its totient is φ = 610256.

The previous prime is 1220507. The next prime is 1220591. The reversal of 1220528 is 8250221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38126 + ... + 38157.

2^1220528 is an apocalyptic number.

It is an amenable number.

1220528 is a deficient number, since it is larger than the sum of its proper divisors (1144276).

1220528 is an equidigital number, since it uses as much as digits as its factorization.

1220528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76291 (or 76285 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 20.

The square root of 1220528 is about 1104.7750902333. The cubic root of 1220528 is about 106.8683856468.

Adding to 1220528 its reverse (8250221), we get a palindrome (9470749).

The spelling of 1220528 in words is "one million, two hundred twenty thousand, five hundred twenty-eight".