30650220 has 36 divisors (see below), whose sum is σ = 92972880. Its totient is φ = 8173344.

The previous prime is 30650219. The next prime is 30650261. The reversal of 30650220 is 2205603.

It is a tau number, because it is divible by the number of its divisors (36).

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 = 30650193 and 30650202.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84960 + ... + 85319.

It is an arithmetic number, because the mean of its divisors is an integer number (2582580).

Almost surely, 2^30650220 is an apocalyptic number.

30650220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30650220 is an abundant number, since it is smaller than the sum of its proper divisors (62322660).

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

30650220 is a wasteful number, since it uses less digits than its factorization.

30650220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170294 (or 170289 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 30650220 is about 5536.2640832966. The cubic root of 30650220 is about 312.9520965658.

Adding to 30650220 its reverse (2205603), we get a palindrome (32855823).

The spelling of 30650220 in words is "thirty million, six hundred fifty thousand, two hundred twenty".