128814733 has 4 divisors (see below), whose sum is σ = 131555520. Its totient is φ = 126073948.

The previous prime is 128814731. The next prime is 128814757. The reversal of 128814733 is 337418821.

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, and also an emirpimes, since its reverse is a distinct semiprime: 337418821 = 83 ⋅4065287.

It is a cyclic number.

It is not a de Polignac number, because 128814733 - 2¹ = 128814731 is a prime.

It is a super-2 number, since 2×128814733² = 33186470875722578, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128814692 and 128814701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128814731) 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, 1370323 + ... + 1370416.

It is an arithmetic number, because the mean of its divisors is an integer number (32888880).

Almost surely, 2^128814733 is an apocalyptic number.

It is an amenable number.

128814733 is a deficient number, since it is larger than the sum of its proper divisors (2740787).

128814733 is an equidigital number, since it uses as much as digits as its factorization.

128814733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2740786.

The product of its digits is 32256, while the sum is 37.

The square root of 128814733 is about 11349.6578362522. The cubic root of 128814733 is about 505.0354293347.

The spelling of 128814733 in words is "one hundred twenty-eight million, eight hundred fourteen thousand, seven hundred thirty-three".