28049487483438 has 32 divisors (see below), whose sum is σ = 62370647529120. Its totient is φ = 9344061192960.

The previous prime is 28049487483401. The next prime is 28049487483469. The reversal of 28049487483438 is 83438478494082.

28049487483438 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 9 + 48 + 74 + 83 + 438 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160132995 + ... + 160308062.

It is an arithmetic number, because the mean of its divisors is an integer number (1949082735285).

Almost surely, 2^{28049487483438} is an apocalyptic number.

28049487483438 is an abundant number, since it is smaller than the sum of its proper divisors (34321160045682).

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

28049487483438 is a wasteful number, since it uses less digits than its factorization.

28049487483438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320442689 (or 320442683 counting only the distinct ones).

The product of its (nonzero) digits is 1189085184, while the sum is 72.

The spelling of 28049487483438 in words is "twenty-eight trillion, forty-nine billion, four hundred eighty-seven million, four hundred eighty-three thousand, four hundred thirty-eight".