1220052436 has 6 divisors (see below), whose sum is σ = 2135091770. Its totient is φ = 610026216.

The previous prime is 1220052391. The next prime is 1220052437. The reversal of 1220052436 is 6342500221.

It can be written as a sum of positive squares in only one way, i.e., 1093624900 + 126427536 = 33070^2 + 11244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1220052436.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220052437) by changing a digit.

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 as a sum of consecutive naturals, namely, 152506551 + ... + 152506558.

Almost surely, 2^1220052436 is an apocalyptic number.

It is an amenable number.

1220052436 is a deficient number, since it is larger than the sum of its proper divisors (915039334).

1220052436 is a wasteful number, since it uses less digits than its factorization.

1220052436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305013113 (or 305013111 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 1220052436 is about 34929.2490042371. The cubic root of 1220052436 is about 1068.5450385156.

Adding to 1220052436 its reverse (6342500221), we get a palindrome (7562552657).

The spelling of 1220052436 in words is "one billion, two hundred twenty million, fifty-two thousand, four hundred thirty-six".