1245155328 has 208 divisors, whose sum is σ = 3761307200. Its totient is φ = 412065792.

The previous prime is 1245155323. The next prime is 1245155389. The reversal of 1245155328 is 8235515421.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1245155292 and 1245155301.

It is not an unprimeable number, because it can be changed into a prime (1245155323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8957883 + ... + 8958021.

Almost surely, 2^1245155328 is an apocalyptic number.

1245155328 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 1245155328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880653600).

1245155328 is an abundant number, since it is smaller than the sum of its proper divisors (2516151872).

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

1245155328 is an frugal number, since it uses more digits than its factorization.

1245155328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 144 counting only the distinct ones).

The product of its digits is 48000, while the sum is 36.

The square root of 1245155328 is about 35286.7585363122. The cubic root of 1245155328 is about 1075.8238726288.

The spelling of 1245155328 in words is "one billion, two hundred forty-five million, one hundred fifty-five thousand, three hundred twenty-eight".