30040207 has 4 divisors (see below), whose sum is σ = 31807296. Its totient is φ = 28273120.

The previous prime is 30040193. The next prime is 30040211. The reversal of 30040207 is 70204003.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30040207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30040217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883519 + ... + 883552.

It is an arithmetic number, because the mean of its divisors is an integer number (7951824).

Almost surely, 2^30040207 is an apocalyptic number.

30040207 is a deficient number, since it is larger than the sum of its proper divisors (1767089).

30040207 is a wasteful number, since it uses less digits than its factorization.

30040207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1767088.

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 30040207 is about 5480.8947262286. The cubic root of 30040207 is about 310.8620025131.

The spelling of 30040207 in words is "thirty million, forty thousand, two hundred seven".