11517390 has 80 divisors (see below), whose sum is σ = 31624560. Its totient is φ = 3006720.

The previous prime is 11517371. The next prime is 11517391. The reversal of 11517390 is 9371511.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11517391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 47670 + ... + 47910.

It is an arithmetic number, because the mean of its divisors is an integer number (395307).

Almost surely, 2^11517390 is an apocalyptic number.

11517390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 11517390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15812280).

11517390 is an abundant number, since it is smaller than the sum of its proper divisors (20107170).

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

11517390 is a wasteful number, since it uses less digits than its factorization.

11517390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 27.

The square root of 11517390 is about 3393.7280386030. The cubic root of 11517390 is about 225.8315893652.

The spelling of 11517390 in words is "eleven million, five hundred seventeen thousand, three hundred ninety".