1320423652 has 48 divisors (see below), whose sum is σ = 2441263104. Its totient is φ = 623700000.

The previous prime is 1320423649. The next prime is 1320423667. The reversal of 1320423652 is 2563240231.

It is a super-2 number, since 2×1320423652² = 3487037241522034208, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1320423652.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4872277 + ... + 4872547.

It is an arithmetic number, because the mean of its divisors is an integer number (50859648).

Almost surely, 2^1320423652 is an apocalyptic number.

It is an amenable number.

1320423652 is a deficient number, since it is larger than the sum of its proper divisors (1120839452).

1320423652 is a wasteful number, since it uses less digits than its factorization.

1320423652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 760 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 1320423652 is about 36337.6341001998. The cubic root of 1320423652 is about 1097.0786539572.

Adding to 1320423652 its reverse (2563240231), we get a palindrome (3883663883).

It can be divided in two parts, 13204 and 23652, that added together give a triangular number (36856 = T₂₇₁).

The spelling of 1320423652 in words is "one billion, three hundred twenty million, four hundred twenty-three thousand, six hundred fifty-two".