2139528428 has 6 divisors (see below), whose sum is σ = 3744174756. Its totient is φ = 1069764212.

The previous prime is 2139528427. The next prime is 2139528431. The reversal of 2139528428 is 8248259312.

It is not an unprimeable number, because it can be changed into a prime (2139528427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 267441050 + ... + 267441057.

It is an arithmetic number, because the mean of its divisors is an integer number (624029126).

Almost surely, 2^2139528428 is an apocalyptic number.

It is an amenable number.

2139528428 is a deficient number, since it is larger than the sum of its proper divisors (1604646328).

2139528428 is a wasteful number, since it uses less digits than its factorization.

2139528428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534882111 (or 534882109 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 2139528428 is about 46255.0367851978. The cubic root of 2139528428 is about 1288.5640789871.

The spelling of 2139528428 in words is "two billion, one hundred thirty-nine million, five hundred twenty-eight thousand, four hundred twenty-eight".