11381690 has 32 divisors (see below), whose sum is σ = 21150720. Its totient is φ = 4408000.

The previous prime is 11381647. The next prime is 11381693. The reversal of 11381690 is 9618311.

It is a happy number.

It is a super-2 number, since 2×11381690² = 259085734512200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11381693) 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, 59495 + ... + 59685.

It is an arithmetic number, because the mean of its divisors is an integer number (660960).

Almost surely, 2^11381690 is an apocalyptic number.

11381690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11381690 is a deficient number, since it is larger than the sum of its proper divisors (9769030).

11381690 is a wasteful number, since it uses less digits than its factorization.

11381690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 11381690 is about 3373.6760366105. The cubic root of 11381690 is about 224.9411533348.

The spelling of 11381690 in words is "eleven million, three hundred eighty-one thousand, six hundred ninety".