28020009470 has 16 divisors (see below), whose sum is σ = 50439412800. Its totient is φ = 11207249184.

The previous prime is 28020009443. The next prime is 28020009473. The reversal of 28020009470 is 7490002082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28020009473) 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, 76331 + ... + 248729.

It is an arithmetic number, because the mean of its divisors is an integer number (3152463300).

Almost surely, 2^28020009470 is an apocalyptic number.

28020009470 is a deficient number, since it is larger than the sum of its proper divisors (22419403330).

28020009470 is a wasteful number, since it uses less digits than its factorization.

28020009470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188659.

The product of its (nonzero) digits is 8064, while the sum is 32.

The spelling of 28020009470 in words is "twenty-eight billion, twenty million, nine thousand, four hundred seventy".