28497473 has 8 divisors (see below), whose sum is σ = 30105600. Its totient is φ = 26900208.

The previous prime is 28497467. The next prime is 28497479. The reversal of 28497473 is 37479482.

It is an interprime number because it is at equal distance from previous prime (28497467) and next prime (28497479).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28497473 - 2¹⁶ = 28431937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28497479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3008 + ... + 8126.

It is an arithmetic number, because the mean of its divisors is an integer number (3763200).

Almost surely, 2^28497473 is an apocalyptic number.

It is an amenable number.

28497473 is a deficient number, since it is larger than the sum of its proper divisors (1608127).

28497473 is a wasteful number, since it uses less digits than its factorization.

28497473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5431.

The product of its digits is 338688, while the sum is 44.

The square root of 28497473 is about 5338.3024455345. The cubic root of 28497473 is about 305.4467090336.

Subtracting 28497473 from its reverse (37479482), we obtain a square (8982009 = 2997²).

The spelling of 28497473 in words is "twenty-eight million, four hundred ninety-seven thousand, four hundred seventy-three".