30769749 has 6 divisors (see below), whose sum is σ = 44445206. Its totient is φ = 20513160.

The previous prime is 30769729. The next prime is 30769757. The reversal of 30769749 is 94796703.

It can be written as a sum of positive squares in only one way, i.e., 26967249 + 3802500 = 5193^2 + 1950^2 .

It is not a de Polignac number, because 30769749 - 2¹¹ = 30767701 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 (30769729) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1709422 + ... + 1709439.

Almost surely, 2^30769749 is an apocalyptic number.

It is an amenable number.

30769749 is a deficient number, since it is larger than the sum of its proper divisors (13675457).

30769749 is a wasteful number, since it uses less digits than its factorization.

30769749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3418867 (or 3418864 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 30769749 is about 5547.0486747459. The cubic root of 30769749 is about 313.3583832646.

The spelling of 30769749 in words is "thirty million, seven hundred sixty-nine thousand, seven hundred forty-nine".