30732145 has 8 divisors (see below), whose sum is σ = 37293480. Its totient is φ = 24309120.

The previous prime is 30732133. The next prime is 30732151. The reversal of 30732145 is 54123703.

It can be written as a sum of positive squares in 4 ways, for example, as 1669264 + 29062881 = 1292^2 + 5391^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30732145 - 2⁵ = 30732113 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34086 + ... + 34975.

It is an arithmetic number, because the mean of its divisors is an integer number (4661685).

Almost surely, 2^30732145 is an apocalyptic number.

It is an amenable number.

30732145 is a deficient number, since it is larger than the sum of its proper divisors (6561335).

30732145 is an equidigital number, since it uses as much as digits as its factorization.

30732145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69155.

The product of its (nonzero) digits is 2520, while the sum is 25.

The square root of 30732145 is about 5543.6580883023. The cubic root of 30732145 is about 313.2306784838.

Adding to 30732145 its reverse (54123703), we get a palindrome (84855848).

The spelling of 30732145 in words is "thirty million, seven hundred thirty-two thousand, one hundred forty-five".