1220832788 has 24 divisors (see below), whose sum is σ = 2476059264. Its totient is φ = 515844000.

The previous prime is 1220832773. The next prime is 1220832791. The reversal of 1220832788 is 8872380221.

It is a happy number.

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, 305063 + ... + 309038.

It is an arithmetic number, because the mean of its divisors is an integer number (103169136).

Almost surely, 2^1220832788 is an apocalyptic number.

It is an amenable number.

1220832788 is an abundant number, since it is smaller than the sum of its proper divisors (1255226476).

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

1220832788 is a wasteful number, since it uses less digits than its factorization.

1220832788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614183 (or 614181 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 41.

The square root of 1220832788 is about 34940.4176849676. The cubic root of 1220832788 is about 1068.7728056509.

The spelling of 1220832788 in words is "one billion, two hundred twenty million, eight hundred thirty-two thousand, seven hundred eighty-eight".