129863248 has 20 divisors (see below), whose sum is σ = 255876480. Its totient is φ = 63830624.

The previous prime is 129863243. The next prime is 129863257. The reversal of 129863248 is 842368921.

It is a super-2 number, since 2×129863248² = 33728926362219008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129863243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67840 + ... + 69727.

It is an arithmetic number, because the mean of its divisors is an integer number (12793824).

Almost surely, 2^129863248 is an apocalyptic number.

It is an amenable number.

129863248 is a deficient number, since it is larger than the sum of its proper divisors (126013232).

129863248 is a wasteful number, since it uses less digits than its factorization.

129863248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137634 (or 137628 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The square root of 129863248 is about 11395.7557011372. The cubic root of 129863248 is about 506.4020093642.

It can be divided in two parts, 1298 and 63248, that added together give a palindrome (64546).

The spelling of 129863248 in words is "one hundred twenty-nine million, eight hundred sixty-three thousand, two hundred forty-eight".