30173040 has 160 divisors (see below), whose sum is σ = 106094400. Its totient is φ = 7879680.

The previous prime is 30173027. The next prime is 30173051. The reversal of 30173040 is 4037103.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 131646 + ... + 131874.

It is an arithmetic number, because the mean of its divisors is an integer number (663090).

Almost surely, 2^30173040 is an apocalyptic number.

30173040 is a gapful number since it is divisible by the number (30) 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 30173040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53047200).

30173040 is an abundant number, since it is smaller than the sum of its proper divisors (75921360).

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

30173040 is a wasteful number, since it uses less digits than its factorization.

30173040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 30173040 is about 5492.9991807755. Note that the first 3 decimals coincide. The cubic root of 30173040 is about 311.3195228643.

The spelling of 30173040 in words is "thirty million, one hundred seventy-three thousand, forty".