1320274655 has 48 divisors (see below), whose sum is σ = 1981869120. Its totient is φ = 824232960.

The previous prime is 1320274649. The next prime is 1320274693. The reversal of 1320274655 is 5564720231.

It is not a de Polignac number, because 1320274655 - 2⁴ = 1320274639 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 570641 + ... + 572949.

It is an arithmetic number, because the mean of its divisors is an integer number (41288940).

Almost surely, 2^1320274655 is an apocalyptic number.

1320274655 is a deficient number, since it is larger than the sum of its proper divisors (661594465).

1320274655 is a wasteful number, since it uses less digits than its factorization.

1320274655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2400 (or 2369 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The square root of 1320274655 is about 36335.5838676083. The cubic root of 1320274655 is about 1097.0373875105.

Adding to 1320274655 its reverse (5564720231), we get a palindrome (6884994886).

The spelling of 1320274655 in words is "one billion, three hundred twenty million, two hundred seventy-four thousand, six hundred fifty-five".