30272220 has 72 divisors (see below), whose sum is σ = 100180080. Its totient is φ = 7338240.

The previous prime is 30272219. The next prime is 30272233. The reversal of 30272220 is 2227203.

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 = 30272193 and 30272202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5665 + ... + 9624.

It is an arithmetic number, because the mean of its divisors is an integer number (1391390).

Almost surely, 2^30272220 is an apocalyptic number.

30272220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30272220 is an abundant number, since it is smaller than the sum of its proper divisors (69907860).

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

30272220 is a wasteful number, since it uses less digits than its factorization.

30272220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15315 (or 15310 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 30272220 is about 5502.0196291907. The cubic root of 30272220 is about 311.6602564128.

Adding to 30272220 its reverse (2227203), we get a palindrome (32499423).

The spelling of 30272220 in words is "thirty million, two hundred seventy-two thousand, two hundred twenty".