128292733 has 4 divisors (see below), whose sum is σ = 129303040. Its totient is φ = 127282428.

The previous prime is 128292709. The next prime is 128292737. The reversal of 128292733 is 337292821.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 128292733 - 2⁹ = 128292221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128292692 and 128292701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128292737) 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, 504963 + ... + 505216.

It is an arithmetic number, because the mean of its divisors is an integer number (32325760).

Almost surely, 2^128292733 is an apocalyptic number.

It is an amenable number.

128292733 is a deficient number, since it is larger than the sum of its proper divisors (1010307).

128292733 is a wasteful number, since it uses less digits than its factorization.

128292733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010306.

The product of its digits is 36288, while the sum is 37.

The square root of 128292733 is about 11326.6382038096. The cubic root of 128292733 is about 504.3523154414.

The spelling of 128292733 in words is "one hundred twenty-eight million, two hundred ninety-two thousand, seven hundred thirty-three".