145023500 has 24 divisors (see below), whose sum is σ = 316732416. Its totient is φ = 58009200.

The previous prime is 145023499. The next prime is 145023503. The reversal of 145023500 is 5320541.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (145023503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144524 + ... + 145523.

It is an arithmetic number, because the mean of its divisors is an integer number (13197184).

Almost surely, 2^145023500 is an apocalyptic number.

145023500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145023500 is an abundant number, since it is smaller than the sum of its proper divisors (171708916).

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

145023500 is a wasteful number, since it uses less digits than its factorization.

145023500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290066 (or 290054 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 145023500 is about 12042.5703236477. The cubic root of 145023500 is about 525.3871671679.

The spelling of 145023500 in words is "one hundred forty-five million, twenty-three thousand, five hundred".