139282568 has 8 divisors (see below), whose sum is σ = 261154830. Its totient is φ = 69641280.

The previous prime is 139282553. The next prime is 139282571. The reversal of 139282568 is 865282931.

It can be written as a sum of positive squares in only one way, i.e., 113252164 + 26030404 = 10642^2 + 5102^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8705153 + ... + 8705168.

Almost surely, 2^139282568 is an apocalyptic number.

It is an amenable number.

139282568 is a deficient number, since it is larger than the sum of its proper divisors (121872262).

139282568 is a wasteful number, since it uses less digits than its factorization.

139282568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17410327 (or 17410323 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 139282568 is about 11801.8035909771. The cubic root of 139282568 is about 518.3609237584.

The spelling of 139282568 in words is "one hundred thirty-nine million, two hundred eighty-two thousand, five hundred sixty-eight".