1084121280 has 672 divisors, whose sum is σ = 4524085440. Its totient is φ = 243302400.

The previous prime is 1084121279. The next prime is 1084121293. The reversal of 1084121280 is 821214801.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 17772450 + ... + 17772510.

It is an arithmetic number, because the mean of its divisors is an integer number (6732270).

Almost surely, 2^1084121280 is an apocalyptic number.

1084121280 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 1084121280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2262042720).

1084121280 is an abundant number, since it is smaller than the sum of its proper divisors (3439964160).

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

1084121280 is a wasteful number, since it uses less digits than its factorization.

1084121280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 1084121280 is about 32925.9970236286. The cubic root of 1084121280 is about 1027.2889651306.

The spelling of 1084121280 in words is "one billion, eighty-four million, one hundred twenty-one thousand, two hundred eighty".