28904353 has 4 divisors (see below), whose sum is σ = 30161088. Its totient is φ = 27647620.

The previous prime is 28904347. The next prime is 28904371. The reversal of 28904353 is 35340982.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 28904353 - 2⁹ = 28903841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28904053) 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, 628333 + ... + 628378.

It is an arithmetic number, because the mean of its divisors is an integer number (7540272).

Almost surely, 2^28904353 is an apocalyptic number.

28904353 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28904353 is a deficient number, since it is larger than the sum of its proper divisors (1256735).

28904353 is a wasteful number, since it uses less digits than its factorization.

28904353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256734.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 28904353 is about 5376.2768715906. The cubic root of 28904353 is about 306.8935428613.

The spelling of 28904353 in words is "twenty-eight million, nine hundred four thousand, three hundred fifty-three".