30125016 has 72 divisors (see below), whose sum is σ = 83750940. Its totient is φ = 9780960.

The previous prime is 30124981. The next prime is 30125023. The reversal of 30125016 is 61052103.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (18).

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

It is a self number, because there is not a number n which added to its sum of digits gives 30125016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 362911 + ... + 362993.

Almost surely, 2^30125016 is an apocalyptic number.

30125016 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30125016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41875470).

30125016 is an abundant number, since it is smaller than the sum of its proper divisors (53625924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30125016 is a wasteful number, since it uses less digits than its factorization.

30125016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 30125016 is about 5488.6260575849. The cubic root of 30125016 is about 311.1542677471.

Adding to 30125016 its reverse (61052103), we get a palindrome (91177119).

The spelling of 30125016 in words is "thirty million, one hundred twenty-five thousand, sixteen".