1220654252 has 12 divisors (see below), whose sum is σ = 2229020976. Its totient is φ = 583791120.

The previous prime is 1220654231. The next prime is 1220654291. The reversal of 1220654252 is 2524560221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6633899 + ... + 6634082.

It is an arithmetic number, because the mean of its divisors is an integer number (185751748).

Almost surely, 2^1220654252 is an apocalyptic number.

It is an amenable number.

1220654252 is a deficient number, since it is larger than the sum of its proper divisors (1008366724).

1220654252 is a wasteful number, since it uses less digits than its factorization.

1220654252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13268008 (or 13268006 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 1220654252 is about 34937.8627279918. The cubic root of 1220654252 is about 1068.7207035869.

The spelling of 1220654252 in words is "one billion, two hundred twenty million, six hundred fifty-four thousand, two hundred fifty-two".