30780741 has 16 divisors (see below), whose sum is σ = 43366400. Its totient is φ = 19366128.

The previous prime is 30780721. The next prime is 30780751. The reversal of 30780741 is 14708703.

It is a happy number.

It is not a de Polignac number, because 30780741 - 2⁹ = 30780229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 30780699 and 30780708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30780721) 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, 16620 + ... + 18378.

It is an arithmetic number, because the mean of its divisors is an integer number (2710400).

Almost surely, 2^30780741 is an apocalyptic number.

It is an amenable number.

30780741 is a deficient number, since it is larger than the sum of its proper divisors (12585659).

30780741 is a wasteful number, since it uses less digits than its factorization.

30780741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2088.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 30780741 is about 5548.0393834219. The cubic root of 30780741 is about 313.3956929100.

The spelling of 30780741 in words is "thirty million, seven hundred eighty thousand, seven hundred forty-one".