147721872 has 20 divisors (see below), whose sum is σ = 381614960. Its totient is φ = 49240608.

The previous prime is 147721859. The next prime is 147721927. The reversal of 147721872 is 278127741.

147721872 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 147721872.

It is an unprimeable number.

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, 1538722 + ... + 1538817.

It is an arithmetic number, because the mean of its divisors is an integer number (19080748).

Almost surely, 2^147721872 is an apocalyptic number.

147721872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

147721872 is an abundant number, since it is smaller than the sum of its proper divisors (233893088).

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

147721872 is a wasteful number, since it uses less digits than its factorization.

147721872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3077550 (or 3077544 counting only the distinct ones).

The product of its digits is 43904, while the sum is 39.

The square root of 147721872 is about 12154.0886947562. The cubic root of 147721872 is about 528.6256930480.

The spelling of 147721872 in words is "one hundred forty-seven million, seven hundred twenty-one thousand, eight hundred seventy-two".