1320227505 has 24 divisors (see below), whose sum is σ = 2373151872. Its totient is φ = 704120688.

The previous prime is 1320227449. The next prime is 1320227527. The reversal of 1320227505 is 5057220231.

1320227505 is a `hidden beast` number, since 132 + 0 + 2 + 27 + 505 = 666.

It is not a de Polignac number, because 1320227505 - 2²³ = 1311838897 is a prime.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 542089 + ... + 544518.

It is an arithmetic number, because the mean of its divisors is an integer number (98881328).

Almost surely, 2^1320227505 is an apocalyptic number.

1320227505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1320227505 is a deficient number, since it is larger than the sum of its proper divisors (1052924367).

1320227505 is an equidigital number, since it uses as much as digits as its factorization.

1320227505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1086627 (or 1086615 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 1320227505 is about 36334.9350487929. The cubic root of 1320227505 is about 1097.0243281246.

Adding to 1320227505 its reverse (5057220231), we get a palindrome (6377447736).

The spelling of 1320227505 in words is "one billion, three hundred twenty million, two hundred twenty-seven thousand, five hundred five".