147731920 has 80 divisors (see below), whose sum is σ = 394224768. Its totient is φ = 50434560.

The previous prime is 147731917. The next prime is 147731971. The reversal of 147731920 is 29137741.

It is a tau number, because it is divible by the number of its divisors (80).

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 15 ways as a sum of consecutive naturals, for example, 184962 + ... + 185758.

Almost surely, 2^147731920 is an apocalyptic number.

147731920 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 147731920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (197112384).

147731920 is an abundant number, since it is smaller than the sum of its proper divisors (246492848).

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

147731920 is a wasteful number, since it uses less digits than its factorization.

147731920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1142 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 147731920 is about 12154.5020465669. The cubic root of 147731920 is about 528.6376784330.

The spelling of 147731920 in words is "one hundred forty-seven million, seven hundred thirty-one thousand, nine hundred twenty".