28631606 has 4 divisors (see below), whose sum is σ = 42947412. Its totient is φ = 14315802.

The previous prime is 28631591. The next prime is 28631609. The reversal of 28631606 is 60613682.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28631609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7157900 + ... + 7157903.

It is an arithmetic number, because the mean of its divisors is an integer number (10736853).

Almost surely, 2^28631606 is an apocalyptic number.

28631606 is a deficient number, since it is larger than the sum of its proper divisors (14315806).

28631606 is a wasteful number, since it uses less digits than its factorization.

28631606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14315805.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28631606 is about 5350.8509603614. The cubic root of 28631606 is about 305.9251885407.

The spelling of 28631606 in words is "twenty-eight million, six hundred thirty-one thousand, six hundred six".