28180376 has 32 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 11961888.

The previous prime is 28180367. The next prime is 28180379. The reversal of 28180376 is 67308182.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28180379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (1905120).

Almost surely, 2^28180376 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28180376, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481920).

28180376 is an abundant number, since it is smaller than the sum of its proper divisors (32783464).

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

28180376 is a wasteful number, since it uses less digits than its factorization.

28180376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4823 (or 4819 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 28180376 is about 5308.5191908855. The cubic root of 28180376 is about 304.3095588657.

The spelling of 28180376 in words is "twenty-eight million, one hundred eighty thousand, three hundred seventy-six".