28220196494 has 16 divisors (see below), whose sum is σ = 48379742208. Its totient is φ = 12093804312.

The previous prime is 28220196437. The next prime is 28220196497. The reversal of 28220196494 is 49469102282.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28220196497) 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, 428219 + ... + 489705.

It is an arithmetic number, because the mean of its divisors is an integer number (3023733888).

Almost surely, 2^28220196494 is an apocalyptic number.

28220196494 is a deficient number, since it is larger than the sum of its proper divisors (20159545714).

28220196494 is a wasteful number, since it uses less digits than its factorization.

28220196494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94279.

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 28220196494 in words is "twenty-eight billion, two hundred twenty million, one hundred ninety-six thousand, four hundred ninety-four".