28180442270 has 8 divisors (see below), whose sum is σ = 50724796104. Its totient is φ = 11272176904.

The previous prime is 28180442177. The next prime is 28180442273. The reversal of 28180442270 is 7224408182.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28180442273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1409022104 + ... + 1409022123.

It is an arithmetic number, because the mean of its divisors is an integer number (6340599513).

Almost surely, 2^28180442270 is an apocalyptic number.

28180442270 is a deficient number, since it is larger than the sum of its proper divisors (22544353834).

28180442270 is a wasteful number, since it uses less digits than its factorization.

28180442270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2818044234.

The product of its (nonzero) digits is 57344, while the sum is 38.

The spelling of 28180442270 in words is "twenty-eight billion, one hundred eighty million, four hundred forty-two thousand, two hundred seventy".