30630290 has 16 divisors (see below), whose sum is σ = 56175768. Its totient is φ = 12020736.

The previous prime is 30630287. The next prime is 30630307. The reversal of 30630290 is 9203603.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 29149201 + 1481089 = 5399^2 + 1217^2 .

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, 28367 + ... + 29426.

Almost surely, 2^30630290 is an apocalyptic number.

30630290 is a deficient number, since it is larger than the sum of its proper divisors (25545478).

30630290 is a wasteful number, since it uses less digits than its factorization.

30630290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57853.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30630290 is about 5534.4638403372. The cubic root of 30630290 is about 312.8842505312.

Adding to 30630290 its reverse (9203603), we get a palindrome (39833893).

The spelling of 30630290 in words is "thirty million, six hundred thirty thousand, two hundred ninety".