1212382080 has 640 divisors, whose sum is σ = 5349516480. Its totient is φ = 254803968.

The previous prime is 1212382057. The next prime is 1212382099. The reversal of 1212382080 is 802832121.

It is a tau number, because it is divible by the number of its divisors (640).

It is a super-4 number, since 4×1212382080⁴ (a number of 37 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4717312 + ... + 4717568.

Almost surely, 2^1212382080 is an apocalyptic number.

1212382080 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 1212382080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2674758240).

1212382080 is an abundant number, since it is smaller than the sum of its proper divisors (4137134400).

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

1212382080 is a wasteful number, since it uses less digits than its factorization.

1212382080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 287 counting only the distinct ones).

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

The square root of 1212382080 is about 34819.2774192688. The cubic root of 1212382080 is about 1066.3010483034.

The spelling of 1212382080 in words is "one billion, two hundred twelve million, three hundred eighty-two thousand, eighty".