28472203 has 16 divisors (see below), whose sum is σ = 31163040. Its totient is φ = 25920000.

The previous prime is 28472201. The next prime is 28472219. The reversal of 28472203 is 30227482.

It is a cyclic number.

It is not a de Polignac number, because 28472203 - 2¹ = 28472201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28472201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70803 + ... + 71203.

It is an arithmetic number, because the mean of its divisors is an integer number (1947690).

Almost surely, 2^28472203 is an apocalyptic number.

28472203 is a deficient number, since it is larger than the sum of its proper divisors (2690837).

28472203 is a wasteful number, since it uses less digits than its factorization.

28472203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 28472203 is about 5335.9350633230. The cubic root of 28472203 is about 305.3563978570.

Adding to 28472203 its reverse (30227482), we get a palindrome (58699685).

It can be divided in two parts, 2847 and 2203, that added together give a triangular number (5050 = T₁₀₀).

The spelling of 28472203 in words is "twenty-eight million, four hundred seventy-two thousand, two hundred three".