28346453 has 4 divisors (see below), whose sum is σ = 28366368. Its totient is φ = 28326540.

The previous prime is 28346449. The next prime is 28346459. The reversal of 28346453 is 35464382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35464382 = 2 ⋅17732191.

It is a cyclic number.

It is not a de Polignac number, because 28346453 - 2² = 28346449 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 (28346459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7643 + ... + 10728.

It is an arithmetic number, because the mean of its divisors is an integer number (7091592).

Almost surely, 2^28346453 is an apocalyptic number.

It is an amenable number.

28346453 is a deficient number, since it is larger than the sum of its proper divisors (19915).

28346453 is a wasteful number, since it uses less digits than its factorization.

28346453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19914.

The product of its digits is 69120, while the sum is 35.

The square root of 28346453 is about 5324.1387096882. The cubic root of 28346453 is about 304.9061899078.

The spelling of 28346453 in words is "twenty-eight million, three hundred forty-six thousand, four hundred fifty-three".