11138620 has 12 divisors (see below), whose sum is σ = 23391144. Its totient is φ = 4455440.

The previous prime is 11138599. The next prime is 11138623. The reversal of 11138620 is 2683111.

It is a junction number, because it is equal to n+sod(n) for n = 11138591 and 11138600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11138623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278446 + ... + 278485.

It is an arithmetic number, because the mean of its divisors is an integer number (1949262).

Almost surely, 2^11138620 is an apocalyptic number.

11138620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11138620 is an abundant number, since it is smaller than the sum of its proper divisors (12252524).

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

11138620 is a wasteful number, since it uses less digits than its factorization.

11138620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556940 (or 556938 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 11138620 is about 3337.4571158294. The cubic root of 11138620 is about 223.3283184934.

The spelling of 11138620 in words is "eleven million, one hundred thirty-eight thousand, six hundred twenty".