28156654 has 4 divisors (see below), whose sum is σ = 42234984. Its totient is φ = 14078326.

The previous prime is 28156643. The next prime is 28156657. The reversal of 28156654 is 45665182.

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 (28156657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7039162 + ... + 7039165.

It is an arithmetic number, because the mean of its divisors is an integer number (10558746).

Almost surely, 2^28156654 is an apocalyptic number.

28156654 is a deficient number, since it is larger than the sum of its proper divisors (14078330).

28156654 is a wasteful number, since it uses less digits than its factorization.

28156654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14078329.

The product of its digits is 57600, while the sum is 37.

The square root of 28156654 is about 5306.2843874033. The cubic root of 28156654 is about 304.2241464983.

The spelling of 28156654 in words is "twenty-eight million, one hundred fifty-six thousand, six hundred fifty-four".