145730500 has 48 divisors (see below), whose sum is σ = 319947264. Its totient is φ = 57986400.

The previous prime is 145730491. The next prime is 145730527. The reversal of 145730500 is 5037541.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110847 + ... + 112153.

It is an arithmetic number, because the mean of its divisors is an integer number (6665568).

Almost surely, 2^145730500 is an apocalyptic number.

145730500 is a gapful number since it is divisible by the number (10) 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 145730500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (159973632).

145730500 is an abundant number, since it is smaller than the sum of its proper divisors (174216764).

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

145730500 is a wasteful number, since it uses less digits than its factorization.

145730500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 1537 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 145730500 is about 12071.8888331528. Note that the first 4 decimals coincide. The cubic root of 145730500 is about 526.2395502727.

The spelling of 145730500 in words is "one hundred forty-five million, seven hundred thirty thousand, five hundred".