30175040 has 112 divisors (see below), whose sum is σ = 86563200. Its totient is φ = 9787392.

The previous prime is 30175039. The next prime is 30175043. The reversal of 30175040 is 4057103.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30175043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42206 + ... + 42914.

Almost surely, 2^30175040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30175040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43281600).

30175040 is an abundant number, since it is smaller than the sum of its proper divisors (56388160).

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

30175040 is a wasteful number, since it uses less digits than its factorization.

30175040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752 (or 742 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 20.

The square root of 30175040 is about 5493.1812276676. The cubic root of 30175040 is about 311.3264012485.

The spelling of 30175040 in words is "thirty million, one hundred seventy-five thousand, forty".