128069292 has 24 divisors (see below), whose sum is σ = 321815536. Its totient is φ = 39405888.

The previous prime is 128069261. The next prime is 128069311. The reversal of 128069292 is 292960821.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 128069292.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 410323 + ... + 410634.

Almost surely, 2^128069292 is an apocalyptic number.

128069292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128069292 is an abundant number, since it is smaller than the sum of its proper divisors (193746244).

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

128069292 is a wasteful number, since it uses less digits than its factorization.

128069292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 820977 (or 820975 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 128069292 is about 11316.7703873499. The cubic root of 128069292 is about 504.0593436044.

The spelling of 128069292 in words is "one hundred twenty-eight million, sixty-nine thousand, two hundred ninety-two".