11771390 has 16 divisors (see below), whose sum is σ = 21919680. Its totient is φ = 4546080.

The previous prime is 11771381. The next prime is 11771411. The reversal of 11771390 is 9317711.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 20006 + ... + 20585.

It is an arithmetic number, because the mean of its divisors is an integer number (1369980).

Almost surely, 2^11771390 is an apocalyptic number.

11771390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11771390 is a deficient number, since it is larger than the sum of its proper divisors (10148290).

11771390 is a wasteful number, since it uses less digits than its factorization.

11771390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40627.

The product of its (nonzero) digits is 1323, while the sum is 29.

The square root of 11771390 is about 3430.9459337040. The cubic root of 11771390 is about 227.4796664997.

The spelling of 11771390 in words is "eleven million, seven hundred seventy-one thousand, three hundred ninety".