129753072 has 30 divisors (see below), whose sum is σ = 363128792. Its totient is φ = 43250976.

The previous prime is 129753049. The next prime is 129753077. The reversal of 129753072 is 270357921.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129753077) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450388 + ... + 450675.

Almost surely, 2^129753072 is an apocalyptic number.

129753072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

129753072 is an abundant number, since it is smaller than the sum of its proper divisors (233375720).

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

129753072 is a wasteful number, since it uses less digits than its factorization.

129753072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901077 (or 901068 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 129753072 is about 11390.9205949300. The cubic root of 129753072 is about 506.2587583304.

The spelling of 129753072 in words is "one hundred twenty-nine million, seven hundred fifty-three thousand, seventy-two".