30806373 has 16 divisors (see below), whose sum is σ = 44670080. Its totient is φ = 18771264.

The previous prime is 30806357. The next prime is 30806387. The reversal of 30806373 is 37360803.

It is a happy number.

It is not a de Polignac number, because 30806373 - 2⁴ = 30806357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30806373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30806393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 183 + ... + 7851.

It is an arithmetic number, because the mean of its divisors is an integer number (2791880).

Almost surely, 2^30806373 is an apocalyptic number.

It is an amenable number.

30806373 is a deficient number, since it is larger than the sum of its proper divisors (13863707).

30806373 is a wasteful number, since it uses less digits than its factorization.

30806373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7788.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 30806373 is about 5550.3489079516. The cubic root of 30806373 is about 313.4826599487.

It can be divided in two parts, 3080 and 6373, that added together give a triangular number (9453 = T₁₃₇).

The spelling of 30806373 in words is "thirty million, eight hundred six thousand, three hundred seventy-three".