1220748 has 24 divisors (see below), whose sum is σ = 2972928. Its totient is φ = 389136.

The previous prime is 1220743. The next prime is 1220761. The reversal of 1220748 is 8470221.

1220748 = T₂₀₇ + T₂₀₈ + ... + T₂₅₂.

It is not an unprimeable number, because it can be changed into a prime (1220743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1936 + ... + 2487.

It is an arithmetic number, because the mean of its divisors is an integer number (123872).

2^1220748 is an apocalyptic number.

It is an amenable number.

1220748 is an abundant number, since it is smaller than the sum of its proper divisors (1752180).

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

1220748 is a wasteful number, since it uses less digits than its factorization.

1220748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4453 (or 4451 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1220748 is about 1104.8746535241. The cubic root of 1220748 is about 106.8748062648.

Adding to 1220748 its reverse (8470221), we get a palindrome (9690969).

The spelling of 1220748 in words is "one million, two hundred twenty thousand, seven hundred forty-eight".