30509070 has 32 divisors (see below), whose sum is σ = 73954080. Its totient is φ = 8054400.

The previous prime is 30509051. The next prime is 30509093. The reversal of 30509070 is 7090503.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30509070.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2005 + ... + 8064.

It is an arithmetic number, because the mean of its divisors is an integer number (2311065).

Almost surely, 2^30509070 is an apocalyptic number.

30509070 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30509070 is an abundant number, since it is smaller than the sum of its proper divisors (43445010).

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

30509070 is a wasteful number, since it uses less digits than its factorization.

30509070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10180.

The product of its (nonzero) digits is 945, while the sum is 24.

The square root of 30509070 is about 5523.5016067708. The cubic root of 30509070 is about 312.4709562341.

Adding to 30509070 its reverse (7090503), we get a palindrome (37599573).

The spelling of 30509070 in words is "thirty million, five hundred nine thousand, seventy".