30520130 has 16 divisors (see below), whose sum is σ = 55837944. Its totient is φ = 12007680.

The previous prime is 30520129. The next prime is 30520157. The reversal of 30520130 is 3102503.

It can be written as a sum of positive squares in 4 ways, for example, as 7123561 + 23396569 = 2669^2 + 4837^2 .

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, 24407 + ... + 25626.

Almost surely, 2^30520130 is an apocalyptic number.

30520130 is a deficient number, since it is larger than the sum of its proper divisors (25317814).

30520130 is a wasteful number, since it uses less digits than its factorization.

30520130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50101.

The product of its (nonzero) digits is 90, while the sum is 14.

The square root of 30520130 is about 5524.5026925507. The cubic root of 30520130 is about 312.5087101572.

Adding to 30520130 its reverse (3102503), we get a palindrome (33622633).

The spelling of 30520130 in words is "thirty million, five hundred twenty thousand, one hundred thirty".