11405632 has 42 divisors (see below), whose sum is σ = 26335482. Its totient is φ = 4886784.

The previous prime is 11405609. The next prime is 11405633. The reversal of 11405632 is 23650411.

It can be written as a sum of positive squares in only one way, i.e., 6635776 + 4769856 = 2576^2 + 2184^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11405633) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1318 + ... + 4954.

Almost surely, 2^11405632 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 11405632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13167741).

11405632 is an abundant number, since it is smaller than the sum of its proper divisors (14929850).

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

11405632 is an equidigital number, since it uses as much as digits as its factorization.

11405632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3663 (or 3646 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 11405632 is about 3377.2225274625. Note that the first 3 decimals coincide. The cubic root of 11405632 is about 225.0987681601.

The spelling of 11405632 in words is "eleven million, four hundred five thousand, six hundred thirty-two".