16230420 has 72 divisors (see below), whose sum is σ = 50583624. Its totient is φ = 4209408.

The previous prime is 16230407. The next prime is 16230437. The reversal of 16230420 is 2403261.

It is a happy number.

16230420 is a `hidden beast` number, since 1 + 623 + 0 + 42 + 0 = 666.

16230420 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 8678916 + 7551504 = 2946^2 + 2748^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 16230393 and 16230402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5442 + ... + 7878.

Almost surely, 2^16230420 is an apocalyptic number.

16230420 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 16230420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25291812).

16230420 is an abundant number, since it is smaller than the sum of its proper divisors (34353204).

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

16230420 is a wasteful number, since it uses less digits than its factorization.

16230420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2489 (or 2484 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 16230420 is about 4028.6995420359. The cubic root of 16230420 is about 253.1880784726.

Adding to 16230420 its reverse (2403261), we get a palindrome (18633681).

The spelling of 16230420 in words is "sixteen million, two hundred thirty thousand, four hundred twenty".