1328464740 has 24 divisors (see below), whose sum is σ = 3719701440. Its totient is φ = 354257248.

The previous prime is 1328464733. The next prime is 1328464757. The reversal of 1328464740 is 474648231.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11070480 + ... + 11070599.

It is an arithmetic number, because the mean of its divisors is an integer number (154987560).

Almost surely, 2^1328464740 is an apocalyptic number.

1328464740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1328464740 is an abundant number, since it is smaller than the sum of its proper divisors (2391236700).

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

1328464740 is a wasteful number, since it uses less digits than its factorization.

1328464740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22141091 (or 22141089 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The square root of 1328464740 is about 36448.1102390782. The cubic root of 1328464740 is about 1099.3011373531.

The spelling of 1328464740 in words is "one billion, three hundred twenty-eight million, four hundred sixty-four thousand, seven hundred forty".