30740818 has 4 divisors (see below), whose sum is σ = 46111230. Its totient is φ = 15370408.

The previous prime is 30740813. The next prime is 30740819. The reversal of 30740818 is 81804703.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 29084449 + 1656369 = 5393^2 + 1287^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 30740818.

It is not an unprimeable number, because it can be changed into a prime (30740813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7685203 + ... + 7685206.

Almost surely, 2^30740818 is an apocalyptic number.

30740818 is a deficient number, since it is larger than the sum of its proper divisors (15370412).

30740818 is a wasteful number, since it uses less digits than its factorization.

30740818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15370411.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 30740818 is about 5544.4402783329. The cubic root of 30740818 is about 313.2601415987.

The spelling of 30740818 in words is "thirty million, seven hundred forty thousand, eight hundred eighteen".