30495130 has 16 divisors (see below), whose sum is σ = 55060200. Its totient is φ = 12160512.

The previous prime is 30495121. The next prime is 30495137. The reversal of 30495130 is 3159403.

It can be written as a sum of positive squares in 4 ways, for example, as 25816561 + 4678569 = 5081^2 + 2163^2 .

It is a junction number, because it is equal to n+sod(n) for n = 30495095 and 30495104.

It is not an unprimeable number, because it can be changed into a prime (30495137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1155 + ... + 7894.

Almost surely, 2^30495130 is an apocalyptic number.

30495130 is a deficient number, since it is larger than the sum of its proper divisors (24565070).

30495130 is a wasteful number, since it uses less digits than its factorization.

30495130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9393.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 30495130 is about 5522.2395819088. The cubic root of 30495130 is about 312.4233582715.

It can be divided in two parts, 30495 and 130, that added together give a square (30625 = 175²).

The spelling of 30495130 in words is "thirty million, four hundred ninety-five thousand, one hundred thirty".