30001690 has 16 divisors (see below), whose sum is σ = 54089928. Its totient is φ = 11981376.

The previous prime is 30001669. The next prime is 30001693. The reversal of 30001690 is 9610003.

It can be written as a sum of positive squares in 4 ways, for example, as 28955161 + 1046529 = 5381^2 + 1023^2 .

It is a super-2 number, since 2×30001690² = 1800202805712200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30001693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5284 + ... + 9376.

Almost surely, 2^30001690 is an apocalyptic number.

30001690 is a deficient number, since it is larger than the sum of its proper divisors (24088238).

30001690 is a wasteful number, since it uses less digits than its factorization.

30001690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4833.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 30001690 is about 5477.3798480660. The cubic root of 30001690 is about 310.7290851780.

Adding to 30001690 its reverse (9610003), we get a palindrome (39611693).

The spelling of 30001690 in words is "thirty million, one thousand, six hundred ninety".