1220636046 has 16 divisors (see below), whose sum is σ = 2790025344. Its totient is φ = 348753144.

The previous prime is 1220636017. The next prime is 1220636077. The reversal of 1220636046 is 6406360221.

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, 14531340 + ... + 14531423.

It is an arithmetic number, because the mean of its divisors is an integer number (174376584).

Almost surely, 2^1220636046 is an apocalyptic number.

1220636046 is an abundant number, since it is smaller than the sum of its proper divisors (1569389298).

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

1220636046 is a wasteful number, since it uses less digits than its factorization.

1220636046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29062775.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 1220636046 is about 34937.6021787415. The cubic root of 1220636046 is about 1068.7153902544.

Adding to 1220636046 its reverse (6406360221), we get a palindrome (7626996267).

The spelling of 1220636046 in words is "one billion, two hundred twenty million, six hundred thirty-six thousand, forty-six".