11129005 has 12 divisors (see below), whose sum is σ = 13554612. Its totient is φ = 8771840.

The previous prime is 11128991. The next prime is 11129017. The reversal of 11129005 is 50092111.

11129005 = T₁₂₉ + T₁₃₀ + ... + T₄₀₉.

11129005 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 1054729 + 10074276 = 1027^2 + 3174^2 .

It is not a de Polignac number, because 11129005 - 2⁵ = 11128973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39465 + ... + 39745.

It is an arithmetic number, because the mean of its divisors is an integer number (1129551).

Almost surely, 2^11129005 is an apocalyptic number.

It is an amenable number.

11129005 is a deficient number, since it is larger than the sum of its proper divisors (2425607).

11129005 is an frugal number, since it uses more digits than its factorization.

11129005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 464 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 90, while the sum is 19.

The square root of 11129005 is about 3336.0163368905. The cubic root of 11129005 is about 223.2640400358.

The spelling of 11129005 in words is "eleven million, one hundred twenty-nine thousand, five".