30500421 has 16 divisors (see below), whose sum is σ = 46644864. Its totient is φ = 17365824.

The previous prime is 30500413. The next prime is 30500423. The reversal of 30500421 is 12400503.

It is not a de Polignac number, because 30500421 - 2³ = 30500413 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30500421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30500423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3675 + ... + 8631.

It is an arithmetic number, because the mean of its divisors is an integer number (2915304).

Almost surely, 2^30500421 is an apocalyptic number.

It is an amenable number.

30500421 is a deficient number, since it is larger than the sum of its proper divisors (16144443).

30500421 is a wasteful number, since it uses less digits than its factorization.

30500421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5260.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 30500421 is about 5522.7186240112. The cubic root of 30500421 is about 312.4414260351.

Adding to 30500421 its reverse (12400503), we get a palindrome (42900924).

The spelling of 30500421 in words is "thirty million, five hundred thousand, four hundred twenty-one".