172373430 has 64 divisors (see below), whose sum is σ = 426057408. Its totient is φ = 44605440.

The previous prime is 172373407. The next prime is 172373447. The reversal of 172373430 is 34373271.

172373430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 433992 + ... + 434388.

It is an arithmetic number, because the mean of its divisors is an integer number (6657147).

Almost surely, 2^172373430 is an apocalyptic number.

172373430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 172373430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (213028704).

172373430 is an abundant number, since it is smaller than the sum of its proper divisors (253683978).

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

172373430 is a wasteful number, since it uses less digits than its factorization.

172373430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 801.

The product of its (nonzero) digits is 10584, while the sum is 30.

The square root of 172373430 is about 13129.1062148190. The cubic root of 172373430 is about 556.5319577149.

The spelling of 172373430 in words is "one hundred seventy-two million, three hundred seventy-three thousand, four hundred thirty".