11915648 has 32 divisors (see below), whose sum is σ = 23957760. Its totient is φ = 5902848.

The previous prime is 11915639. The next prime is 11915663. The reversal of 11915648 is 84651911.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×11915648³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15890 + ... + 16622.

It is an arithmetic number, because the mean of its divisors is an integer number (748680).

Almost surely, 2^11915648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11915648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11978880).

11915648 is an abundant number, since it is smaller than the sum of its proper divisors (12042112).

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

11915648 is an equidigital number, since it uses as much as digits as its factorization.

11915648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874 (or 862 counting only the distinct ones).

The product of its digits is 8640, while the sum is 35.

The square root of 11915648 is about 3451.9049813110. The cubic root of 11915648 is about 228.4051481117.

The spelling of 11915648 in words is "eleven million, nine hundred fifteen thousand, six hundred forty-eight".