11778930 has 48 divisors (see below), whose sum is σ = 31688280. Its totient is φ = 3032064.

The previous prime is 11778919. The next prime is 11778953. The reversal of 11778930 is 3987711.

It can be written as a sum of positive squares in 4 ways, for example, as 5322249 + 6456681 = 2307^2 + 2541^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 354 + ... + 4866.

Almost surely, 2^11778930 is an apocalyptic number.

11778930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11778930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15844140).

11778930 is an abundant number, since it is smaller than the sum of its proper divisors (19909350).

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

11778930 is a wasteful number, since it uses less digits than its factorization.

11778930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4555 (or 4552 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 11778930 is about 3432.0445801300. The cubic root of 11778930 is about 227.5282257778.

It can be divided in two parts, 11778 and 930, that multiplied together give a triangular number (10953540 = T₄₆₈₀).

The spelling of 11778930 in words is "eleven million, seven hundred seventy-eight thousand, nine hundred thirty".