1078115220 has 432 divisors, whose sum is σ = 4162983552. Its totient is φ = 221045760.

The previous prime is 1078115219. The next prime is 1078115249. The reversal of 1078115220 is 225118701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 12989299 + ... + 12989381.

It is an arithmetic number, because the mean of its divisors is an integer number (9636536).

Almost surely, 2^1078115220 is an apocalyptic number.

1078115220 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 1078115220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2081491776).

1078115220 is an abundant number, since it is smaller than the sum of its proper divisors (3084868332).

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

1078115220 is a wasteful number, since it uses less digits than its factorization.

1078115220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192 (or 174 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 1078115220 is about 32834.6649137767. The cubic root of 1078115220 is about 1025.3883818701.

The spelling of 1078115220 in words is "one billion, seventy-eight million, one hundred fifteen thousand, two hundred twenty".