1223507808 has 48 divisors (see below), whose sum is σ = 3568566960. Its totient is φ = 407835648.

The previous prime is 1223507771. The next prime is 1223507863. The reversal of 1223507808 is 8087053221.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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, 707185 + ... + 708912.

It is an arithmetic number, because the mean of its divisors is an integer number (74345145).

Almost surely, 2^1223507808 is an apocalyptic number.

1223507808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1223507808 is an abundant number, since it is smaller than the sum of its proper divisors (2345059152).

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

1223507808 is a wasteful number, since it uses less digits than its factorization.

1223507808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416116 (or 1416102 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 1223507808 is about 34978.6764758188. The cubic root of 1223507808 is about 1069.5528477787.

The spelling of 1223507808 in words is "one billion, two hundred twenty-three million, five hundred seven thousand, eight hundred eight".