28376506 has 4 divisors (see below), whose sum is σ = 42564762. Its totient is φ = 14188252.

The previous prime is 28376497. The next prime is 28376539. The reversal of 28376506 is 60567382.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22896225 + 5480281 = 4785^2 + 2341^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7094125 + ... + 7094128.

Almost surely, 2^28376506 is an apocalyptic number.

28376506 is a deficient number, since it is larger than the sum of its proper divisors (14188256).

28376506 is a wasteful number, since it uses less digits than its factorization.

28376506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188255.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 28376506 is about 5326.9602964543. The cubic root of 28376506 is about 305.0139060219.

It can be divided in two parts, 28376 and 506, that added together give a palindrome (28882).

The spelling of 28376506 in words is "twenty-eight million, three hundred seventy-six thousand, five hundred six".