11858740 has 36 divisors (see below), whose sum is σ = 25774308. Its totient is φ = 4583040.

The previous prime is 11858729. The next prime is 11858747. The reversal of 11858740 is 4785811.

It can be written as a sum of positive squares in 2 ways, for example, as 1860496 + 9998244 = 1364^2 + 3162^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11858696 and 11858705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11858747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18912 + ... + 19528.

It is an arithmetic number, because the mean of its divisors is an integer number (715953).

Almost surely, 2^11858740 is an apocalyptic number.

11858740 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 11858740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12887154).

11858740 is an abundant number, since it is smaller than the sum of its proper divisors (13915568).

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

11858740 is a wasteful number, since it uses less digits than its factorization.

11858740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 655 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 11858740 is about 3443.6521310957. The cubic root of 11858740 is about 228.0409539647.

The spelling of 11858740 in words is "eleven million, eight hundred fifty-eight thousand, seven hundred forty".