1326434520 has 64 divisors (see below), whose sum is σ = 4213386720. Its totient is φ = 332908544.

The previous prime is 1326434491. The next prime is 1326434531. The reversal of 1326434520 is 254346231.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 323067 + ... + 327146.

Almost surely, 2^1326434520 is an apocalyptic number.

1326434520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326434520 is an abundant number, since it is smaller than the sum of its proper divisors (2886952200).

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

1326434520 is a wasteful number, since it uses less digits than its factorization.

1326434520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650244 (or 650240 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1326434520 is about 36420.2487635656. The cubic root of 1326434520 is about 1098.7408512377.

The spelling of 1326434520 in words is "one billion, three hundred twenty-six million, four hundred thirty-four thousand, five hundred twenty".