30280420 has 24 divisors (see below), whose sum is σ = 66354624. Its totient is φ = 11585376.

The previous prime is 30280409. The next prime is 30280423. The reversal of 30280420 is 2408203.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30280423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32454 + ... + 33373.

It is an arithmetic number, because the mean of its divisors is an integer number (2764776).

Almost surely, 2^30280420 is an apocalyptic number.

It is an amenable number.

30280420 is an abundant number, since it is smaller than the sum of its proper divisors (36074204).

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

30280420 is a wasteful number, since it uses less digits than its factorization.

30280420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65859 (or 65857 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 30280420 is about 5502.7647596458. The cubic root of 30280420 is about 311.6883942389.

Adding to 30280420 its reverse (2408203), we get a palindrome (32688623).

The spelling of 30280420 in words is "thirty million, two hundred eighty thousand, four hundred twenty".