11858280 has 128 divisors (see below), whose sum is σ = 42854400. Its totient is φ = 2564352.

The previous prime is 11858279. The next prime is 11858281. The reversal of 11858280 is 8285811.

11858280 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11858279) and next prime (11858281).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15589 + ... + 16331.

It is an arithmetic number, because the mean of its divisors is an integer number (334800).

Almost surely, 2^11858280 is an apocalyptic number.

11858280 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 11858280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21427200).

11858280 is an abundant number, since it is smaller than the sum of its proper divisors (30996120).

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

11858280 is a wasteful number, since it uses less digits than its factorization.

11858280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 779 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 33.

The square root of 11858280 is about 3443.5853408911. The cubic root of 11858280 is about 228.0380053604.

The spelling of 11858280 in words is "eleven million, eight hundred fifty-eight thousand, two hundred eighty".