1203399028 has 12 divisors (see below), whose sum is σ = 2267944420. Its totient is φ = 555414912.

The previous prime is 1203399023. The next prime is 1203399049. The reversal of 1203399028 is 8209933021.

It can be written as a sum of positive squares in 2 ways, for example, as 640191204 + 563207824 = 25302^2 + 23732^2 .

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203399023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11571093 + ... + 11571196.

Almost surely, 2^1203399028 is an apocalyptic number.

It is an amenable number.

1203399028 is a deficient number, since it is larger than the sum of its proper divisors (1064545392).

1203399028 is a wasteful number, since it uses less digits than its factorization.

1203399028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23142306 (or 23142304 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 1203399028 is about 34690.0422023381. The cubic root of 1203399028 is about 1063.6609584114.

The spelling of 1203399028 in words is "one billion, two hundred three million, three hundred ninety-nine thousand, twenty-eight".