11958240 has 96 divisors (see below), whose sum is σ = 43061760. Its totient is φ = 2732544.

The previous prime is 11958223. The next prime is 11958241. The reversal of 11958240 is 4285911.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11958198 and 11958207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11958241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1581 + ... + 5139.

It is an arithmetic number, because the mean of its divisors is an integer number (448560).

Almost surely, 2^11958240 is an apocalyptic number.

11958240 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 11958240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21530880).

11958240 is an abundant number, since it is smaller than the sum of its proper divisors (31103520).

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

11958240 is a wasteful number, since it uses less digits than its factorization.

11958240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584 (or 3576 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 11958240 is about 3458.0688252260. The cubic root of 11958240 is about 228.6769661439.

The spelling of 11958240 in words is "eleven million, nine hundred fifty-eight thousand, two hundred forty".