11159940 has 96 divisors (see below), whose sum is σ = 35086464. Its totient is φ = 2626560.

The previous prime is 11159933. The next prime is 11159959. The reversal of 11159940 is 4995111.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 11159898 and 11159907.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24192 + ... + 24648.

It is an arithmetic number, because the mean of its divisors is an integer number (365484).

Almost surely, 2^11159940 is an apocalyptic number.

11159940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11159940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17543232).

11159940 is an abundant number, since it is smaller than the sum of its proper divisors (23926524).

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

11159940 is a wasteful number, since it uses less digits than its factorization.

11159940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 517 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 11159940 is about 3340.6496374208. The cubic root of 11159940 is about 223.4707157003.

It can be divided in two parts, 11 and 159940, that added together give a palindrome (159951).

The spelling of 11159940 in words is "eleven million, one hundred fifty-nine thousand, nine hundred forty".