28739049406 has 16 divisors (see below), whose sum is σ = 45648813600. Its totient is φ = 13522942720.

The previous prime is 28739049373. The next prime is 28739049407. The reversal of 28739049406 is 60494093782.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28739049407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374295 + ... + 444493.

It is an arithmetic number, because the mean of its divisors is an integer number (2853050850).

Almost surely, 2^28739049406 is an apocalyptic number.

28739049406 is a deficient number, since it is larger than the sum of its proper divisors (16909764194).

28739049406 is a wasteful number, since it uses less digits than its factorization.

28739049406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82259.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 28739049406 in words is "twenty-eight billion, seven hundred thirty-nine million, forty-nine thousand, four hundred six".