11380554 has 32 divisors (see below), whose sum is σ = 25645440. Its totient is φ = 3740256.

The previous prime is 11380547. The next prime is 11380619. The reversal of 11380554 is 45508311.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2499 + ... + 5385.

It is an arithmetic number, because the mean of its divisors is an integer number (801420).

Almost surely, 2^11380554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11380554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12822720).

11380554 is an abundant number, since it is smaller than the sum of its proper divisors (14264886).

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

11380554 is a wasteful number, since it uses less digits than its factorization.

11380554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2971 (or 2965 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 11380554 is about 3373.5076700669. The cubic root of 11380554 is about 224.9336693363.

Adding to 11380554 its reverse (45508311), we get a palindrome (56888865).

The spelling of 11380554 in words is "eleven million, three hundred eighty thousand, five hundred fifty-four".