1220152536 has 48 divisors (see below), whose sum is σ = 3306460560. Its totient is φ = 406486080.

The previous prime is 1220152517. The next prime is 1220152541. The reversal of 1220152536 is 6352510221.

It is a happy number.

1220152536 is a `hidden beast` number, since 122 + 0 + 1 + 5 + 2 + 536 = 666.

It is a super-2 number, since 2×1220152536² = 2977544422214462592, which contains 22 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 162726 + ... + 170058.

It is an arithmetic number, because the mean of its divisors is an integer number (68884595).

Almost surely, 2^1220152536 is an apocalyptic number.

It is an amenable number.

1220152536 is an abundant number, since it is smaller than the sum of its proper divisors (2086308024).

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

1220152536 is a wasteful number, since it uses less digits than its factorization.

1220152536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9656 (or 9649 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1220152536 is about 34930.6818713864. The cubic root of 1220152536 is about 1068.5742608753.

Adding to 1220152536 its reverse (6352510221), we get a palindrome (7572662757).

The spelling of 1220152536 in words is "one billion, two hundred twenty million, one hundred fifty-two thousand, five hundred thirty-six".