30650420 has 48 divisors (see below), whose sum is σ = 68678400. Its totient is φ = 11456640.

The previous prime is 30650407. The next prime is 30650429. The reversal of 30650420 is 2405603.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30650392 and 30650401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30650429) 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, 29510 + ... + 30530.

It is an arithmetic number, because the mean of its divisors is an integer number (1430800).

Almost surely, 2^30650420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30650420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34339200).

30650420 is an abundant number, since it is smaller than the sum of its proper divisors (38027980).

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

30650420 is a wasteful number, since it uses less digits than its factorization.

30650420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128 (or 1126 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 30650420 is about 5536.2821459893. The cubic root of 30650420 is about 312.9527772600.

The spelling of 30650420 in words is "thirty million, six hundred fifty thousand, four hundred twenty".