30900736 has 20 divisors (see below), whose sum is σ = 61742142. Its totient is φ = 15450112.

The previous prime is 30900733. The next prime is 30900743. The reversal of 30900736 is 63700903.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 430336 = 5520^2 + 656^2 .

It is not an unprimeable number, because it can be changed into a prime (30900731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29665 + ... + 30688.

Almost surely, 2^30900736 is an apocalyptic number.

It is an amenable number.

30900736 is a deficient number, since it is larger than the sum of its proper divisors (30841406).

30900736 is an frugal number, since it uses more digits than its factorization.

30900736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60371 (or 60355 counting only the distinct ones).

The product of its (nonzero) digits is 3402, while the sum is 28.

The square root of 30900736 is about 5558.8430450949. The cubic root of 30900736 is about 313.8024099365.

The spelling of 30900736 in words is "thirty million, nine hundred thousand, seven hundred thirty-six".