147781136 has 20 divisors (see below), whose sum is σ = 303169212. Its totient is φ = 69543936.

The previous prime is 147781121. The next prime is 147781157. The reversal of 147781136 is 631187741.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 137921536 + 9859600 = 11744^2 + 3140^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 147781136.

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 3 ways as a sum of consecutive naturals, for example, 271385 + ... + 271928.

Almost surely, 2^147781136 is an apocalyptic number.

147781136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

147781136 is an abundant number, since it is smaller than the sum of its proper divisors (155388076).

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

147781136 is a wasteful number, since it uses less digits than its factorization.

147781136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543338 (or 543332 counting only the distinct ones).

The product of its digits is 28224, while the sum is 38.

The square root of 147781136 is about 12156.5264775757. The cubic root of 147781136 is about 528.6963760688.

The spelling of 147781136 in words is "one hundred forty-seven million, seven hundred eighty-one thousand, one hundred thirty-six".