1220015232 has 192 divisors, whose sum is σ = 3731364000. Its totient is φ = 381542400.

The previous prime is 1220015231. The next prime is 1220015233. The reversal of 1220015232 is 2325100221.

It is an interprime number because it is at equal distance from previous prime (1220015231) and next prime (1220015233).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1220015231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3042232 + ... + 3042632.

Almost surely, 2^1220015232 is an apocalyptic number.

1220015232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220015232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1865682000).

1220015232 is an abundant number, since it is smaller than the sum of its proper divisors (2511348768).

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

1220015232 is a wasteful number, since it uses less digits than its factorization.

1220015232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1220015232 is about 34928.7164379111. The cubic root of 1220015232 is about 1068.5341770825.

Adding to 1220015232 its reverse (2325100221), we get a palindrome (3545115453).

The spelling of 1220015232 in words is "one billion, two hundred twenty million, fifteen thousand, two hundred thirty-two".