1241987328 has 108 divisors (see below), whose sum is σ = 3640071708. Its totient is φ = 407162880.

The previous prime is 1241987291. The next prime is 1241987333. The reversal of 1241987328 is 8237891421.

It is a happy number.

1241987328 is a `hidden beast` number, since 1 + 241 + 9 + 87 + 328 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 719956224 + 522031104 = 26832^2 + 22848^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136126 + ... + 144962.

Almost surely, 2^1241987328 is an apocalyptic number.

1241987328 is a gapful number since it is divisible by the number (18) 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 1241987328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1820035854).

1241987328 is an abundant number, since it is smaller than the sum of its proper divisors (2398084380).

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

1241987328 is an equidigital number, since it uses as much as digits as its factorization.

1241987328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8920 (or 8903 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 1241987328 is about 35241.8405875743. The cubic root of 1241987328 is about 1074.9107055450.

The spelling of 1241987328 in words is "one billion, two hundred forty-one million, nine hundred eighty-seven thousand, three hundred twenty-eight".