12354420 has 96 divisors (see below), whose sum is σ = 38158848. Its totient is φ = 2967552.

The previous prime is 12354413. The next prime is 12354443. The reversal of 12354420 is 2445321.

12354420 = T₁₆₉ + T₁₇₀ + ... + T₄₂₈.

12354420 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36492 + ... + 36828.

It is an arithmetic number, because the mean of its divisors is an integer number (397488).

Almost surely, 2^12354420 is an apocalyptic number.

12354420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12354420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19079424).

12354420 is an abundant number, since it is smaller than the sum of its proper divisors (25804428).

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

12354420 is a wasteful number, since it uses less digits than its factorization.

12354420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 12354420 is about 3514.8854888886. The cubic root of 12354420 is about 231.1749578764.

Adding to 12354420 its reverse (2445321), we get a palindrome (14799741).

Subtracting from 12354420 its reverse (2445321), we obtain a palindrome (9909099).

The spelling of 12354420 in words is "twelve million, three hundred fifty-four thousand, four hundred twenty".