30730090 has 12 divisors (see below), whose sum is σ = 55345734. Its totient is φ = 12285024.

The previous prime is 30730061. The next prime is 30730099. The reversal of 30730090 is 9003703.

It can be written as a sum of positive squares in 3 ways, for example, as 6827769 + 23902321 = 2613^2 + 4889^2 .

It is not an unprimeable number, because it can be changed into a prime (30730099) 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, 16654 + ... + 18406.

Almost surely, 2^30730090 is an apocalyptic number.

30730090 is a deficient number, since it is larger than the sum of its proper divisors (24615644).

30730090 is an frugal number, since it uses more digits than its factorization.

30730090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3513 (or 1760 counting only the distinct ones).

The product of its (nonzero) digits is 567, while the sum is 22.

The square root of 30730090 is about 5543.4727382752. The cubic root of 30730090 is about 313.2236966152.

Adding to 30730090 its reverse (9003703), we get a palindrome (39733793).

The spelling of 30730090 in words is "thirty million, seven hundred thirty thousand, ninety".