1223566788 has 48 divisors (see below), whose sum is σ = 3135928320. Its totient is φ = 369588384.

The previous prime is 1223566787. The next prime is 1223566831. The reversal of 1223566788 is 8876653221.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1223566787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111420 + ... + 121907.

It is an arithmetic number, because the mean of its divisors is an integer number (65331840).

Almost surely, 2^1223566788 is an apocalyptic number.

It is an amenable number.

1223566788 is an abundant number, since it is smaller than the sum of its proper divisors (1912361532).

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

1223566788 is a wasteful number, since it uses less digits than its factorization.

1223566788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233376 (or 233374 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 1223566788 is about 34979.5195507314. The cubic root of 1223566788 is about 1069.5700336692.

The spelling of 1223566788 in words is "one billion, two hundred twenty-three million, five hundred sixty-six thousand, seven hundred eighty-eight".