147881644 has 24 divisors (see below), whose sum is σ = 265496000. Its totient is φ = 72034704.

The previous prime is 147881633. The next prime is 147881653. The reversal of 147881644 is 446188741.

It is a happy number.

147881644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a self number, because there is not a number n which added to its sum of digits gives 147881644.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84967 + ... + 86689.

Almost surely, 2^147881644 is an apocalyptic number.

It is an amenable number.

147881644 is a deficient number, since it is larger than the sum of its proper divisors (117614356).

147881644 is a wasteful number, since it uses less digits than its factorization.

147881644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269 (or 2267 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 147881644 is about 12160.6596860532. The cubic root of 147881644 is about 528.8162068192.

The spelling of 147881644 in words is "one hundred forty-seven million, eight hundred eighty-one thousand, six hundred forty-four".