1530172 has 36 divisors (see below), whose sum is σ = 3214344. Its totient is φ = 635040.

The previous prime is 1530157. The next prime is 1530173. The reversal of 1530172 is 2710351.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1530173) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7147 + ... + 7357.

2^1530172 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 1530172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1607172).

1530172 is an abundant number, since it is smaller than the sum of its proper divisors (1684172).

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

1530172 is a wasteful number, since it uses less digits than its factorization.

1530172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266 (or 257 counting only the distinct ones).

The product of its (nonzero) digits is 210, while the sum is 19.

The square root of 1530172 is about 1237.0012126106. The cubic root of 1530172 is about 115.2338530588.

The spelling of 1530172 in words is "one million, five hundred thirty thousand, one hundred seventy-two".