12154914 has 64 divisors (see below), whose sum is σ = 28615680. Its totient is φ = 3818880.

The previous prime is 12154913. The next prime is 12154931. The reversal of 12154914 is 41945121.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12154913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88654 + ... + 88790.

It is an arithmetic number, because the mean of its divisors is an integer number (447120).

Almost surely, 2^12154914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12154914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14307840).

12154914 is an abundant number, since it is smaller than the sum of its proper divisors (16460766).

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

12154914 is a wasteful number, since it uses less digits than its factorization.

12154914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232 (or 226 counting only the distinct ones).

The product of its digits is 1440, while the sum is 27.

The square root of 12154914 is about 3486.3898232986. The cubic root of 12154914 is about 229.9238185000.

The spelling of 12154914 in words is "twelve million, one hundred fifty-four thousand, nine hundred fourteen".