12154530 has 32 divisors (see below), whose sum is σ = 29275200. Its totient is φ = 3229632.

The previous prime is 12154523. The next prime is 12154553. The reversal of 12154530 is 3545121.

It is a junction number, because it is equal to n+sod(n) for n = 12154497 and 12154506.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10836 + ... + 11904.

It is an arithmetic number, because the mean of its divisors is an integer number (914850).

Almost surely, 2^12154530 is an apocalyptic number.

12154530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12154530 is an abundant number, since it is smaller than the sum of its proper divisors (17120670).

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

12154530 is a wasteful number, since it uses less digits than its factorization.

12154530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 12154530 is about 3486.3347515693. The cubic root of 12154530 is about 229.9213972110.

Adding to 12154530 its reverse (3545121), we get a palindrome (15699651).

It can be divided in two parts, 121545 and 30, that multiplied together give a triangular number (3646350 = T₂₇₀₀).

The spelling of 12154530 in words is "twelve million, one hundred fifty-four thousand, five hundred thirty".