1320247452 has 48 divisors (see below), whose sum is σ = 3253944960. Its totient is φ = 415476288.

The previous prime is 1320247441. The next prime is 1320247469. The reversal of 1320247452 is 2547420231.

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, 56923 + ... + 76685.

It is an arithmetic number, because the mean of its divisors is an integer number (67790520).

Almost surely, 2^1320247452 is an apocalyptic number.

1320247452 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 1320247452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1626972480).

1320247452 is an abundant number, since it is smaller than the sum of its proper divisors (1933697508).

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

1320247452 is a wasteful number, since it uses less digits than its factorization.

1320247452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20082 (or 20080 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 30.

The square root of 1320247452 is about 36335.2095356556. The cubic root of 1320247452 is about 1097.0298529890.

Adding to 1320247452 its reverse (2547420231), we get a palindrome (3867667683).

The spelling of 1320247452 in words is "one billion, three hundred twenty million, two hundred forty-seven thousand, four hundred fifty-two".