128748097 has 4 divisors (see below), whose sum is σ = 128770816. Its totient is φ = 128725380.

The previous prime is 128748073. The next prime is 128748107. The reversal of 128748097 is 790847821.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 128748097 - 2²³ = 120359489 is a prime.

It is a super-2 number, since 2×128748097² = 33152144962242818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128748017) 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, 4888 + ... + 16774.

It is an arithmetic number, because the mean of its divisors is an integer number (32192704).

Almost surely, 2^128748097 is an apocalyptic number.

It is an amenable number.

128748097 is a deficient number, since it is larger than the sum of its proper divisors (22719).

128748097 is a wasteful number, since it uses less digits than its factorization.

128748097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22718.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 128748097 is about 11346.7218614012. The cubic root of 128748097 is about 504.9483291903.

It can be divided in two parts, 128 and 748097, that added together give a square (748225 = 865²).

The spelling of 128748097 in words is "one hundred twenty-eight million, seven hundred forty-eight thousand, ninety-seven".