11481690 has 48 divisors (see below), whose sum is σ = 30298464. Its totient is φ = 2782560.

The previous prime is 11481683. The next prime is 11481707. The reversal of 11481690 is 9618411.

It is a super-2 number, since 2×11481690² = 263658410512200, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2049 + ... + 5211.

It is an arithmetic number, because the mean of its divisors is an integer number (631218).

Almost surely, 2^11481690 is an apocalyptic number.

11481690 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 11481690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15149232).

11481690 is an abundant number, since it is smaller than the sum of its proper divisors (18816774).

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

11481690 is a wasteful number, since it uses less digits than its factorization.

11481690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3195 (or 3184 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 30.

The square root of 11481690 is about 3388.4642539062. The cubic root of 11481690 is about 225.5980141040.

The spelling of 11481690 in words is "eleven million, four hundred eighty-one thousand, six hundred ninety".