1205623056 has 40 divisors (see below), whose sum is σ = 3397666464. Its totient is φ = 365340160.

The previous prime is 1205623031. The next prime is 1205623063. The reversal of 1205623056 is 6503265021.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1141161 + ... + 1142216.

Almost surely, 2^1205623056 is an apocalyptic number.

1205623056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1205623056 is an abundant number, since it is smaller than the sum of its proper divisors (2192043408).

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

1205623056 is a wasteful number, since it uses less digits than its factorization.

1205623056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2283399 (or 2283393 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 1205623056 is about 34722.0831172325. The cubic root of 1205623056 is about 1064.3158135012.

Adding to 1205623056 its reverse (6503265021), we get a palindrome (7708888077).

The spelling of 1205623056 in words is "one billion, two hundred five million, six hundred twenty-three thousand, fifty-six".