145473900 has 144 divisors (see below), whose sum is σ = 494635008. Its totient is φ = 32544000.

The previous prime is 145473871. The next prime is 145473929. The reversal of 145473900 is 9374541.

It is an interprime number because it is at equal distance from previous prime (145473871) and next prime (145473929).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41205 + ... + 44595.

Almost surely, 2^145473900 is an apocalyptic number.

145473900 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 145473900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (247317504).

145473900 is an abundant number, since it is smaller than the sum of its proper divisors (349161108).

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

145473900 is a wasteful number, since it uses less digits than its factorization.

145473900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432 (or 3425 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 145473900 is about 12061.2561534858. The cubic root of 145473900 is about 525.9305040060.

The spelling of 145473900 in words is "one hundred forty-five million, four hundred seventy-three thousand, nine hundred".