10840554 has 40 divisors (see below), whose sum is σ = 24711588. Its totient is φ = 3551040.

The previous prime is 10840553. The next prime is 10840559. The reversal of 10840554 is 45504801.

10840554 is a `hidden beast` number, since 108 + 4 + 0 + 554 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 9090225 + 1750329 = 3015^2 + 1323^2 .

It is a super-2 number, since 2×10840554² = 235035222053832, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (10840553) 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 19 ways as a sum of consecutive naturals, for example, 9334 + ... + 10430.

Almost surely, 2^10840554 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10840554, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12355794).

10840554 is an abundant number, since it is smaller than the sum of its proper divisors (13871034).

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

10840554 is a wasteful number, since it uses less digits than its factorization.

10840554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172 (or 1163 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 27.

The square root of 10840554 is about 3292.4996583143. The cubic root of 10840554 is about 221.3182151050.

The spelling of 10840554 in words is "ten million, eight hundred forty thousand, five hundred fifty-four".