12151908 has 36 divisors (see below), whose sum is σ = 31470348. Its totient is φ = 3951360.

The previous prime is 12151901. The next prime is 12151927. The reversal of 12151908 is 80915121.

12151908 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 2 ways, for example, as 1340964 + 10810944 = 1158^2 + 3288^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (12151901) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2641 + ... + 5592.

Almost surely, 2^12151908 is an apocalyptic number.

12151908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12151908 is an abundant number, since it is smaller than the sum of its proper divisors (19318440).

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

12151908 is a wasteful number, since it uses less digits than its factorization.

12151908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284 (or 8279 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

The square root of 12151908 is about 3485.9586916658. The cubic root of 12151908 is about 229.9048629845.

The spelling of 12151908 in words is "twelve million, one hundred fifty-one thousand, nine hundred eight".