30012420 has 48 divisors (see below), whose sum is σ = 84309120. Its totient is φ = 7977216.

The previous prime is 30012397. The next prime is 30012431. The reversal of 30012420 is 2421003.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 30012396 and 30012405.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 23929 + ... + 25151.

It is an arithmetic number, because the mean of its divisors is an integer number (1756440).

Almost surely, 2^30012420 is an apocalyptic number.

30012420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30012420 is an abundant number, since it is smaller than the sum of its proper divisors (54296700).

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

30012420 is a wasteful number, since it uses less digits than its factorization.

30012420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644 (or 1642 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 30012420 is about 5478.3592434232. The cubic root of 30012420 is about 310.7661244879.

Adding to 30012420 its reverse (2421003), we get a palindrome (32433423).

It can be divided in two parts, 300 and 12420, that added together give a triangular number (12720 = T₁₅₉).

The spelling of 30012420 in words is "thirty million, twelve thousand, four hundred twenty".