1320571512 has 160 divisors (see below), whose sum is σ = 4052386800. Its totient is φ = 399292416.

The previous prime is 1320571507. The next prime is 1320571513. The reversal of 1320571512 is 2151750231.

It is a super-2 number, since 2×1320571512² = 3487818236611932288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320571513) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 495688 + ... + 498344.

Almost surely, 2^1320571512 is an apocalyptic number.

1320571512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1320571512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2026193400).

1320571512 is an abundant number, since it is smaller than the sum of its proper divisors (2731815288).

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

1320571512 is a wasteful number, since it uses less digits than its factorization.

1320571512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2747 (or 2734 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 27.

The square root of 1320571512 is about 36339.6685730621. The cubic root of 1320571512 is about 1097.1196024298.

The spelling of 1320571512 in words is "one billion, three hundred twenty million, five hundred seventy-one thousand, five hundred twelve".