1213025280 has 176 divisors, whose sum is σ = 3912946944. Its totient is φ = 320716800.

The previous prime is 1213025239. The next prime is 1213025291. The reversal of 1213025280 is 825203121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1213025280.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2319099 + ... + 2319621.

Almost surely, 2^1213025280 is an apocalyptic number.

1213025280 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 1213025280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956473472).

1213025280 is an abundant number, since it is smaller than the sum of its proper divisors (2699921664).

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

1213025280 is a wasteful number, since it uses less digits than its factorization.

1213025280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702 (or 684 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 1213025280 is about 34828.5124574679. The cubic root of 1213025280 is about 1066.4895817136.

The spelling of 1213025280 in words is "one billion, two hundred thirteen million, twenty-five thousand, two hundred eighty".