1320264380 has 12 divisors (see below), whose sum is σ = 2772555240. Its totient is φ = 528105744.

The previous prime is 1320264371. The next prime is 1320264427. The reversal of 1320264380 is 834620231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33006590 + ... + 33006629.

It is an arithmetic number, because the mean of its divisors is an integer number (231046270).

Almost surely, 2^1320264380 is an apocalyptic number.

1320264380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320264380 is an abundant number, since it is smaller than the sum of its proper divisors (1452290860).

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

1320264380 is a wasteful number, since it uses less digits than its factorization.

1320264380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66013228 (or 66013226 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 1320264380 is about 36335.4424770086. The cubic root of 1320264380 is about 1097.0345416156.

The spelling of 1320264380 in words is "one billion, three hundred twenty million, two hundred sixty-four thousand, three hundred eighty".