1328476990 has 16 divisors (see below), whose sum is σ = 2397112560. Its totient is φ = 530089920.

The previous prime is 1328476901. The next prime is 1328476991. The reversal of 1328476990 is 996748231.

It is a super-2 number, since 2×1328476990² = 3529702225918920200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328476991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158316 + ... + 166495.

It is an arithmetic number, because the mean of its divisors is an integer number (149819535).

Almost surely, 2^1328476990 is an apocalyptic number.

1328476990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1328476990 is a deficient number, since it is larger than the sum of its proper divisors (1068635570).

1328476990 is a wasteful number, since it uses less digits than its factorization.

1328476990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325227.

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 1328476990 is about 36448.2782858121. The cubic root of 1328476990 is about 1099.3045162905.

The spelling of 1328476990 in words is "one billion, three hundred twenty-eight million, four hundred seventy-six thousand, nine hundred ninety".