30420310 has 32 divisors (see below), whose sum is σ = 58475520. Its totient is φ = 11354112.

The previous prime is 30420277. The next prime is 30420317. The reversal of 30420310 is 1302403.

It is a super-2 number, since 2×30420310² = 1850790520992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30420317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20886 + ... + 22294.

It is an arithmetic number, because the mean of its divisors is an integer number (1827360).

Almost surely, 2^30420310 is an apocalyptic number.

30420310 is a deficient number, since it is larger than the sum of its proper divisors (28055210).

30420310 is a wasteful number, since it uses less digits than its factorization.

30420310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 30420310 is about 5515.4609961453. The cubic root of 30420310 is about 312.1676381058.

Adding to 30420310 its reverse (1302403), we get a palindrome (31722713).

The spelling of 30420310 in words is "thirty million, four hundred twenty thousand, three hundred ten".