30000070 has 32 divisors (see below), whose sum is σ = 57736800. Its totient is φ = 11183616.

The previous prime is 30000059. The next prime is 30000071. The reversal of 30000070 is 7000003.

It is a Harshad number since it is a multiple of its sum of digits (10).

30000070 is a modest number, since divided by 70 gives 30 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30000071) 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 15 ways as a sum of consecutive naturals, for example, 17721 + ... + 19339.

It is an arithmetic number, because the mean of its divisors is an integer number (1804275).

Almost surely, 2^30000070 is an apocalyptic number.

30000070 is a deficient number, since it is larger than the sum of its proper divisors (27736730).

30000070 is a wasteful number, since it uses less digits than its factorization.

30000070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1752.

The product of its (nonzero) digits is 21, while the sum is 10.

The square root of 30000070 is about 5477.2319651444. The cubic root of 30000070 is about 310.7234922688.

Adding to 30000070 its reverse (7000003), we get a palindrome (37000073).

The spelling of 30000070 in words is "thirty million, seventy", and thus it is an aban number and an uban number.