28497455 has 8 divisors (see below), whose sum is σ = 39082272. Its totient is φ = 19541088.

The previous prime is 28497451. The next prime is 28497461. The reversal of 28497455 is 55479482.

It is a happy number.

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

It is not a de Polignac number, because 28497455 - 2² = 28497451 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28497451) 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, 407072 + ... + 407141.

It is an arithmetic number, because the mean of its divisors is an integer number (4885284).

Almost surely, 2^28497455 is an apocalyptic number.

28497455 is a deficient number, since it is larger than the sum of its proper divisors (10584817).

28497455 is an equidigital number, since it uses as much as digits as its factorization.

28497455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814225.

The product of its digits is 403200, while the sum is 44.

The square root of 28497455 is about 5338.3007596051. The cubic root of 28497455 is about 305.4466447233.

The spelling of 28497455 in words is "twenty-eight million, four hundred ninety-seven thousand, four hundred fifty-five".