30793749 has 16 divisors (see below), whose sum is σ = 49684608. Its totient is φ = 16561152.

The previous prime is 30793739. The next prime is 30793753. The reversal of 30793749 is 94739703.

It is not a de Polignac number, because 30793749 - 2⁸ = 30793493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30793749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30793709) 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, 42772 + ... + 43485.

It is an arithmetic number, because the mean of its divisors is an integer number (3105288).

Almost surely, 2^30793749 is an apocalyptic number.

It is an amenable number.

30793749 is a deficient number, since it is larger than the sum of its proper divisors (18890859).

30793749 is a wasteful number, since it uses less digits than its factorization.

30793749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86284.

The product of its (nonzero) digits is 142884, while the sum is 42.

The square root of 30793749 is about 5549.2115656190. The cubic root of 30793749 is about 313.4398338990.

The spelling of 30793749 in words is "thirty million, seven hundred ninety-three thousand, seven hundred forty-nine".