147448728 has 128 divisors (see below), whose sum is σ = 472780800. Its totient is φ = 41707008.

The previous prime is 147448711. The next prime is 147448747. The reversal of 147448728 is 827844741.

147448728 is a `hidden beast` number, since 147 + 4 + 487 + 28 = 666.

It is a super-2 number, since 2×147448728² = 43482254777635968, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 170425 + ... + 171287.

It is an arithmetic number, because the mean of its divisors is an integer number (3693600).

Almost surely, 2^147448728 is an apocalyptic number.

147448728 is a gapful number since it is divisible by the number (18) 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 147448728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236390400).

147448728 is an abundant number, since it is smaller than the sum of its proper divisors (325332072).

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

147448728 is a wasteful number, since it uses less digits than its factorization.

147448728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998 (or 988 counting only the distinct ones).

The product of its digits is 401408, while the sum is 45.

The square root of 147448728 is about 12142.8467831889. The cubic root of 147448728 is about 528.2996749238.

The spelling of 147448728 in words is "one hundred forty-seven million, four hundred forty-eight thousand, seven hundred twenty-eight".