145173472 has 24 divisors (see below), whose sum is σ = 302623776. Its totient is φ = 68316672.

The previous prime is 145173467. The next prime is 145173499. The reversal of 145173472 is 274371541.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 132888 + ... + 133975.

It is an arithmetic number, because the mean of its divisors is an integer number (12609324).

Almost surely, 2^145173472 is an apocalyptic number.

It is an amenable number.

145173472 is an abundant number, since it is smaller than the sum of its proper divisors (157450304).

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

145173472 is a wasteful number, since it uses less digits than its factorization.

145173472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266890 (or 266882 counting only the distinct ones).

The product of its digits is 23520, while the sum is 34.

The square root of 145173472 is about 12048.7954584680. The cubic root of 145173472 is about 525.5682095948.

The spelling of 145173472 in words is "one hundred forty-five million, one hundred seventy-three thousand, four hundred seventy-two".