249106128 has 20 divisors (see below), whose sum is σ = 643524288. Its totient is φ = 83035360.

The previous prime is 249106087. The next prime is 249106129. The reversal of 249106128 is 821601942.

249106128 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249106129) 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, 2594808 + ... + 2594903.

Almost surely, 2^249106128 is an apocalyptic number.

It is an amenable number.

249106128 is an abundant number, since it is smaller than the sum of its proper divisors (394418160).

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

249106128 is a wasteful number, since it uses less digits than its factorization.

249106128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5189722 (or 5189716 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 249106128 is about 15783.0962741789. The cubic root of 249106128 is about 629.2088229013.

The spelling of 249106128 in words is "two hundred forty-nine million, one hundred six thousand, one hundred twenty-eight".