30125890 has 8 divisors (see below), whose sum is σ = 54226620. Its totient is φ = 12050352.

The previous prime is 30125873. The next prime is 30125899. The reversal of 30125890 is 9852103.

It can be written as a sum of positive squares in 2 ways, for example, as 29582721 + 543169 = 5439^2 + 737^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (30125899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1506285 + ... + 1506304.

Almost surely, 2^30125890 is an apocalyptic number.

30125890 is a deficient number, since it is larger than the sum of its proper divisors (24100730).

30125890 is a wasteful number, since it uses less digits than its factorization.

30125890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012596.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 30125890 is about 5488.7056762045. The cubic root of 30125890 is about 311.1572768321.

Adding to 30125890 its reverse (9852103), we get a palindrome (39977993).

The spelling of 30125890 in words is "thirty million, one hundred twenty-five thousand, eight hundred ninety".