11873780 has 12 divisors (see below), whose sum is σ = 24934980. Its totient is φ = 4749504.

The previous prime is 11873777. The next prime is 11873783. The reversal of 11873780 is 8737811.

It is an interprime number because it is at equal distance from previous prime (11873777) and next prime (11873783).

It can be written as a sum of positive squares in 2 ways, for example, as 8271376 + 3602404 = 2876^2 + 1898^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11873780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11873783) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 296825 + ... + 296864.

It is an arithmetic number, because the mean of its divisors is an integer number (2077915).

Almost surely, 2^11873780 is an apocalyptic number.

11873780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11873780 is an abundant number, since it is smaller than the sum of its proper divisors (13061200).

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

11873780 is a wasteful number, since it uses less digits than its factorization.

11873780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593698 (or 593696 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 35.

The square root of 11873780 is about 3445.8351672708. The cubic root of 11873780 is about 228.1373185316.

It can be divided in two parts, 1 and 1873780, that added together give a palindrome (1873781).

The spelling of 11873780 in words is "eleven million, eight hundred seventy-three thousand, seven hundred eighty".