1223389528 has 32 divisors (see below), whose sum is σ = 2318349600. Its totient is φ = 605183488.

The previous prime is 1223389501. The next prime is 1223389561. The reversal of 1223389528 is 8259833221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757650 + ... + 759262.

It is an arithmetic number, because the mean of its divisors is an integer number (72448425).

Almost surely, 2^1223389528 is an apocalyptic number.

It is an amenable number.

1223389528 is a deficient number, since it is larger than the sum of its proper divisors (1094960072).

1223389528 is a wasteful number, since it uses less digits than its factorization.

1223389528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571 (or 2567 counting only the distinct ones).

The product of its digits is 207360, while the sum is 43.

The square root of 1223389528 is about 34976.9856905938. The cubic root of 1223389528 is about 1069.5183810902.

It can be divided in two parts, 12233 and 89528, that added together give a square (101761 = 319²).

The spelling of 1223389528 in words is "one billion, two hundred twenty-three million, three hundred eighty-nine thousand, five hundred twenty-eight".