145204500 has 96 divisors (see below), whose sum is σ = 483275520. Its totient is φ = 33187200.

The previous prime is 145204483. The next prime is 145204511. The reversal of 145204500 is 5402541.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 3586 + ... + 17414.

It is an arithmetic number, because the mean of its divisors is an integer number (5034120).

Almost surely, 2^145204500 is an apocalyptic number.

145204500 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 145204500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241637760).

145204500 is an abundant number, since it is smaller than the sum of its proper divisors (338071020).

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

145204500 is a wasteful number, since it uses less digits than its factorization.

145204500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13858 (or 13846 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 145204500 is about 12050.0829872661. The cubic root of 145204500 is about 525.6056502477.

The spelling of 145204500 in words is "one hundred forty-five million, two hundred four thousand, five hundred".