30349220 has 36 divisors (see below), whose sum is σ = 70059612. Its totient is φ = 11035200.

The previous prime is 30349211. The next prime is 30349223. The reversal of 30349220 is 2294303.

It can be written as a sum of positive squares in 2 ways, for example, as 19166884 + 11182336 = 4378^2 + 3344^2 .

It is not an unprimeable number, because it can be changed into a prime (30349223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3851 + ... + 8690.

Almost surely, 2^30349220 is an apocalyptic number.

It is an amenable number.

30349220 is an abundant number, since it is smaller than the sum of its proper divisors (39710392).

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

30349220 is a wasteful number, since it uses less digits than its factorization.

30349220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12572 (or 12559 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30349220 is about 5509.0126157053. The cubic root of 30349220 is about 311.9242775912.

The spelling of 30349220 in words is "thirty million, three hundred forty-nine thousand, two hundred twenty".