239400028 has 12 divisors (see below), whose sum is σ = 478800112. Its totient is φ = 102600000.

The previous prime is 239400023. The next prime is 239400041. The reversal of 239400028 is 820004932.

239400028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

239400028 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 8550001 = 239400028 / (2 + 3 + 9 + 4 + 0 + 0 + 0 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 239399969 and 239400005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239400023) 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, 4274973 + ... + 4275028.

Almost surely, 2^239400028 is an apocalyptic number.

239400028 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

239400028 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

239400028 is a wasteful number, since it uses less digits than its factorization.

239400028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8550012 (or 8550010 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 239400028 is about 15472.5572547010. The cubic root of 239400028 is about 620.9282211537.

The spelling of 239400028 in words is "two hundred thirty-nine million, four hundred thousand, twenty-eight".