30209470 has 16 divisors (see below), whose sum is σ = 55404000. Its totient is φ = 11855584.

The previous prime is 30209461. The next prime is 30209471. The reversal of 30209470 is 7490203.

It is a super-2 number, since 2×30209470² = 1825224155361800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30209471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27970 + ... + 29029.

It is an arithmetic number, because the mean of its divisors is an integer number (3462750).

Almost surely, 2^30209470 is an apocalyptic number.

30209470 is a deficient number, since it is larger than the sum of its proper divisors (25194530).

30209470 is a wasteful number, since it uses less digits than its factorization.

30209470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57059.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 30209470 is about 5496.3142195475. The cubic root of 30209470 is about 311.4447650106. Note that the first 3 decimals are identical.

Adding to 30209470 its reverse (7490203), we get a palindrome (37699673).

The spelling of 30209470 in words is "thirty million, two hundred nine thousand, four hundred seventy".