11163990 has 32 divisors (see below), whose sum is σ = 26943840. Its totient is φ = 2960384.

The previous prime is 11163989. The next prime is 11163991. The reversal of 11163990 is 9936111.

11163990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11163989) and next prime (11163991).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11163991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4966 + ... + 6854.

It is an arithmetic number, because the mean of its divisors is an integer number (841995).

Almost surely, 2^11163990 is an apocalyptic number.

11163990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11163990 is an abundant number, since it is smaller than the sum of its proper divisors (15779850).

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

11163990 is a wasteful number, since it uses less digits than its factorization.

11163990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2096.

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 11163990 is about 3341.2557519591. The cubic root of 11163990 is about 223.4977453241.

The spelling of 11163990 in words is "eleven million, one hundred sixty-three thousand, nine hundred ninety".