11912788 has 6 divisors (see below), whose sum is σ = 20847386. Its totient is φ = 5956392.

The previous prime is 11912731. The next prime is 11912807. The reversal of 11912788 is 88721911.

11912788 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 11751184 + 161604 = 3428^2 + 402^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1489095 + ... + 1489102.

Almost surely, 2^11912788 is an apocalyptic number.

It is an amenable number.

11912788 is a deficient number, since it is larger than the sum of its proper divisors (8934598).

11912788 is a wasteful number, since it uses less digits than its factorization.

11912788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2978201 (or 2978199 counting only the distinct ones).

The product of its digits is 8064, while the sum is 37.

The square root of 11912788 is about 3451.4906924400. The cubic root of 11912788 is about 228.3868726755.

The spelling of 11912788 in words is "eleven million, nine hundred twelve thousand, seven hundred eighty-eight".