28277320190 has 64 divisors (see below), whose sum is σ = 61269696000. Its totient is φ = 9179174016.

The previous prime is 28277320187. The next prime is 28277320193. The reversal of 28277320190 is 9102377282.

It is an interprime number because it is at equal distance from previous prime (28277320187) and next prime (28277320193).

It is a super-2 number, since 2×28277320190² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28277320193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2530736 + ... + 2541884.

It is an arithmetic number, because the mean of its divisors is an integer number (957339000).

Almost surely, 2^28277320190 is an apocalyptic number.

28277320190 is an abundant number, since it is smaller than the sum of its proper divisors (32992375810).

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

28277320190 is a wasteful number, since it uses less digits than its factorization.

28277320190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13089.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 28277320190 in words is "twenty-eight billion, two hundred seventy-seven million, three hundred twenty thousand, one hundred ninety".