147945520 has 20 divisors (see below), whose sum is σ = 343973520. Its totient is φ = 59178176.

The previous prime is 147945493. The next prime is 147945521. The reversal of 147945520 is 25549741.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 147945520.

It is not an unprimeable number, because it can be changed into a prime (147945521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 924580 + ... + 924739.

It is an arithmetic number, because the mean of its divisors is an integer number (17198676).

Almost surely, 2^147945520 is an apocalyptic number.

147945520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

147945520 is an abundant number, since it is smaller than the sum of its proper divisors (196028000).

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

147945520 is a wasteful number, since it uses less digits than its factorization.

147945520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849332 (or 1849326 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 147945520 is about 12163.2857402924. The cubic root of 147945520 is about 528.8923348200.

The spelling of 147945520 in words is "one hundred forty-seven million, nine hundred forty-five thousand, five hundred twenty".