28738472406 has 32 divisors (see below), whose sum is σ = 65949666048. Its totient is φ = 8178276000.

The previous prime is 28738472393. The next prime is 28738472417. The reversal of 28738472406 is 60427483782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1352505 + ... + 1373588.

It is an arithmetic number, because the mean of its divisors is an integer number (2060927064).

Almost surely, 2^28738472406 is an apocalyptic number.

28738472406 is an abundant number, since it is smaller than the sum of its proper divisors (37211193642).

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

28738472406 is a wasteful number, since it uses less digits than its factorization.

28738472406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2726356.

The product of its (nonzero) digits is 3612672, while the sum is 51.

The spelling of 28738472406 in words is "twenty-eight billion, seven hundred thirty-eight million, four hundred seventy-two thousand, four hundred six".