30530070 has 24 divisors (see below), whose sum is σ = 79378416. Its totient is φ = 8141328.

The previous prime is 30530057. The next prime is 30530077. The reversal of 30530070 is 7003503.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30530077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169522 + ... + 169701.

It is an arithmetic number, because the mean of its divisors is an integer number (3307434).

Almost surely, 2^30530070 is an apocalyptic number.

30530070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30530070 is an abundant number, since it is smaller than the sum of its proper divisors (48848346).

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

30530070 is a wasteful number, since it uses less digits than its factorization.

30530070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339236 (or 339233 counting only the distinct ones).

The product of its (nonzero) digits is 315, while the sum is 18.

The square root of 30530070 is about 5525.4022478006. The cubic root of 30530070 is about 312.5426331168.

Adding to 30530070 its reverse (7003503), we get a palindrome (37533573).

The spelling of 30530070 in words is "thirty million, five hundred thirty thousand, seventy".