147730428 has 36 divisors (see below), whose sum is σ = 377064688. Its totient is φ = 48764160.

The previous prime is 147730423. The next prime is 147730433. The reversal of 147730428 is 824037741.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (147730423) and next prime (147730433).

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 147730392 and 147730401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147730423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16213 + ... + 23628.

Almost surely, 2^147730428 is an apocalyptic number.

147730428 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

147730428 is an abundant number, since it is smaller than the sum of its proper divisors (229334260).

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

147730428 is a wasteful number, since it uses less digits than its factorization.

147730428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39954 (or 39949 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 147730428 is about 12154.4406699774. The cubic root of 147730428 is about 528.6358987903.

The spelling of 147730428 in words is "one hundred forty-seven million, seven hundred thirty thousand, four hundred twenty-eight".