28378262 has 8 divisors (see below), whose sum is σ = 46437192. Its totient is φ = 12899200.

The previous prime is 28378261. The next prime is 28378279. The reversal of 28378262 is 26287382.

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 (28378261) 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, 644939 + ... + 644982.

It is an arithmetic number, because the mean of its divisors is an integer number (5804649).

Almost surely, 2^28378262 is an apocalyptic number.

28378262 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28378262 is a deficient number, since it is larger than the sum of its proper divisors (18058930).

28378262 is a wasteful number, since it uses less digits than its factorization.

28378262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1289934.

The product of its digits is 64512, while the sum is 38.

The square root of 28378262 is about 5327.1251158575. The cubic root of 28378262 is about 305.0201975337.

The spelling of 28378262 in words is "twenty-eight million, three hundred seventy-eight thousand, two hundred sixty-two".