128012070 has 32 divisors (see below), whose sum is σ = 311442912. Its totient is φ = 33668352.

The previous prime is 128012039. The next prime is 128012081. The reversal of 128012070 is 70210821.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27037 + ... + 31416.

It is an arithmetic number, because the mean of its divisors is an integer number (9732591).

Almost surely, 2^128012070 is an apocalyptic number.

128012070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128012070 is an abundant number, since it is smaller than the sum of its proper divisors (183430842).

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

128012070 is a wasteful number, since it uses less digits than its factorization.

128012070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58536.

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 128012070 is about 11314.2419100884. The cubic root of 128012070 is about 503.9842603424.

Adding to 128012070 its reverse (70210821), we get a palindrome (198222891).

The spelling of 128012070 in words is "one hundred twenty-eight million, twelve thousand, seventy".