1212032880 has 120 divisors (see below), whose sum is σ = 4088741280. Its totient is φ = 321753600.

The previous prime is 1212032869. The next prime is 1212032891. The reversal of 1212032880 is 882302121.

It is an interprime number because it is at equal distance from previous prime (1212032869) and next prime (1212032891).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 161205 + ... + 168555.

It is an arithmetic number, because the mean of its divisors is an integer number (34072844).

Almost surely, 2^1212032880 is an apocalyptic number.

1212032880 is a gapful number since it is divisible by the number (10) 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 1212032880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2044370640).

1212032880 is an abundant number, since it is smaller than the sum of its proper divisors (2876708400).

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

1212032880 is a wasteful number, since it uses less digits than its factorization.

1212032880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7599 (or 7590 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 1212032880 is about 34814.2625945172. The cubic root of 1212032880 is about 1066.1986636160.

The spelling of 1212032880 in words is "one billion, two hundred twelve million, thirty-two thousand, eight hundred eighty".