1028403036 has 18 divisors (see below), whose sum is σ = 2599574432. Its totient is φ = 342801000.

The previous prime is 1028403031. The next prime is 1028403053. The reversal of 1028403036 is 6303048201.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×1028403036² = 2115225608908034592, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028403031) 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 5 ways as a sum of consecutive naturals, for example, 14283340 + ... + 14283411.

Almost surely, 2^1028403036 is an apocalyptic number.

It is an amenable number.

1028403036 is an abundant number, since it is smaller than the sum of its proper divisors (1571171396).

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

1028403036 is a wasteful number, since it uses less digits than its factorization.

1028403036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28566761 (or 28566756 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 1028403036 is about 32068.7236415795. The cubic root of 1028403036 is about 1009.3794299134.

The spelling of 1028403036 in words is "one billion, twenty-eight million, four hundred three thousand, thirty-six".