239290128 has 180 divisors, whose sum is σ = 850110768. Its totient is φ = 62133120.

The previous prime is 239290127. The next prime is 239290133. The reversal of 239290128 is 821092932.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 239290092 and 239290101.

It is not an unprimeable number, because it can be changed into a prime (239290127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 76075 + ... + 79157.

Almost surely, 2^239290128 is an apocalyptic number.

239290128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 239290128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (425055384).

239290128 is an abundant number, since it is smaller than the sum of its proper divisors (610820640).

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

239290128 is a wasteful number, since it uses less digits than its factorization.

239290128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3122 (or 3106 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 239290128 is about 15469.0053978916. The cubic root of 239290128 is about 620.8331912896.

The spelling of 239290128 in words is "two hundred thirty-nine million, two hundred ninety thousand, one hundred twenty-eight".