1328502090 has 32 divisors (see below), whose sum is σ = 3266174016. Its totient is φ = 345626240.

The previous prime is 1328502073. The next prime is 1328502163. The reversal of 1328502090 is 902058231.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 538812 + ... + 541271.

It is an arithmetic number, because the mean of its divisors is an integer number (102067938).

Almost surely, 2^1328502090 is an apocalyptic number.

1328502090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328502090 is an abundant number, since it is smaller than the sum of its proper divisors (1937671926).

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

1328502090 is a wasteful number, since it uses less digits than its factorization.

1328502090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080134.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1328502090 is about 36448.6226077200. The cubic root of 1328502090 is about 1099.3114395993.

It can be divided in two parts, 132850 and 2090, that added together give a triangular number (134940 = T₅₁₉).

The spelling of 1328502090 in words is "one billion, three hundred twenty-eight million, five hundred two thousand, ninety".