30535220 has 24 divisors (see below), whose sum is σ = 64555008. Its totient is φ = 12132000.

The previous prime is 30535207. The next prime is 30535259. The reversal of 30535220 is 2253503.

It is a Smith number, since the sum of its digits (20) coincides with the sum of the digits of its prime factors.

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 = 30535192 and 30535201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2036 + ... + 8075.

It is an arithmetic number, because the mean of its divisors is an integer number (2689792).

Almost surely, 2^30535220 is an apocalyptic number.

It is an amenable number.

30535220 is an abundant number, since it is smaller than the sum of its proper divisors (34019788).

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

30535220 is a wasteful number, since it uses less digits than its factorization.

30535220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10271 (or 10269 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 30535220 is about 5525.8682575682. The cubic root of 30535220 is about 312.5602060000.

Adding to 30535220 its reverse (2253503), we get a palindrome (32788723).

The spelling of 30535220 in words is "thirty million, five hundred thirty-five thousand, two hundred twenty".