30649394 has 16 divisors (see below), whose sum is σ = 49704000. Its totient is φ = 14125104.

The previous prime is 30649391. The next prime is 30649397. The reversal of 30649394 is 49394603.

It is an interprime number because it is at equal distance from previous prime (30649391) and next prime (30649397).

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30649391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9494 + ... + 12305.

It is an arithmetic number, because the mean of its divisors is an integer number (3106500).

Almost surely, 2^30649394 is an apocalyptic number.

30649394 is a deficient number, since it is larger than the sum of its proper divisors (19054606).

30649394 is a wasteful number, since it uses less digits than its factorization.

30649394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21857.

The product of its (nonzero) digits is 69984, while the sum is 38.

The square root of 30649394 is about 5536.1894837514. The cubic root of 30649394 is about 312.9492852672.

The spelling of 30649394 in words is "thirty million, six hundred forty-nine thousand, three hundred ninety-four".