147881144 has 8 divisors (see below), whose sum is σ = 277277160. Its totient is φ = 73940568.

The previous prime is 147881131. The next prime is 147881197. The reversal of 147881144 is 441188741.

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 147881098 and 147881107.

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 as a sum of consecutive naturals, namely, 9242564 + ... + 9242579.

It is an arithmetic number, because the mean of its divisors is an integer number (34659645).

Almost surely, 2^147881144 is an apocalyptic number.

It is an amenable number.

147881144 is a deficient number, since it is larger than the sum of its proper divisors (129396016).

147881144 is a wasteful number, since it uses less digits than its factorization.

147881144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18485149 (or 18485145 counting only the distinct ones).

The product of its digits is 28672, while the sum is 38.

The square root of 147881144 is about 12160.6391279406. The cubic root of 147881144 is about 528.8156108281.

The spelling of 147881144 in words is "one hundred forty-seven million, eight hundred eighty-one thousand, one hundred forty-four".