11951506 has 16 divisors (see below), whose sum is σ = 20965824. Its totient is φ = 5002704.

The previous prime is 11951503. The next prime is 11951507. The reversal of 11951506 is 60515911.

It is not an unprimeable number, because it can be changed into a prime (11951503) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9325 + ... + 10528.

It is an arithmetic number, because the mean of its divisors is an integer number (1310364).

Almost surely, 2^11951506 is an apocalyptic number.

11951506 is a deficient number, since it is larger than the sum of its proper divisors (9014318).

11951506 is a wasteful number, since it uses less digits than its factorization.

11951506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19905.

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11951506 is about 3457.0950232818. The cubic root of 11951506 is about 228.6340334092.

It can be divided in two parts, 1195 and 1506, that added together give a triangular number (2701 = T₇₃).

The spelling of 11951506 in words is "eleven million, nine hundred fifty-one thousand, five hundred six".