30630745 has 4 divisors (see below), whose sum is σ = 36756900. Its totient is φ = 24504592.

The previous prime is 30630737. The next prime is 30630751. The reversal of 30630745 is 54703603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 22382361 = 2872^2 + 4731^2 .

It is a cyclic number.

It is not a de Polignac number, because 30630745 - 2³ = 30630737 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3063070 + ... + 3063079.

It is an arithmetic number, because the mean of its divisors is an integer number (9189225).

Almost surely, 2^30630745 is an apocalyptic number.

It is an amenable number.

30630745 is a deficient number, since it is larger than the sum of its proper divisors (6126155).

30630745 is an equidigital number, since it uses as much as digits as its factorization.

30630745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6126154.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 30630745 is about 5534.5049462441. The cubic root of 30630745 is about 312.8857997780.

It can be divided in two parts, 30630 and 745, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 30630745 in words is "thirty million, six hundred thirty thousand, seven hundred forty-five".