128268701 has 4 divisors (see below), whose sum is σ = 139929504. Its totient is φ = 116607900.

The previous prime is 128268697. The next prime is 128268703. The reversal of 128268701 is 107862821.

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 128268701 - 2² = 128268697 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128268703) 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, 5830385 + ... + 5830406.

It is an arithmetic number, because the mean of its divisors is an integer number (34982376).

Almost surely, 2^128268701 is an apocalyptic number.

128268701 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

128268701 is a deficient number, since it is larger than the sum of its proper divisors (11660803).

128268701 is a wasteful number, since it uses less digits than its factorization.

128268701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11660802.

The product of its (nonzero) digits is 10752, while the sum is 35.

The square root of 128268701 is about 11325.5772921295. The cubic root of 128268701 is about 504.3208214473.

The spelling of 128268701 in words is "one hundred twenty-eight million, two hundred sixty-eight thousand, seven hundred one".