28208354 has 8 divisors (see below), whose sum is σ = 42428928. Its totient is φ = 14065380.

The previous prime is 28208339. The next prime is 28208359. The reversal of 28208354 is 45380282.

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

It is a super-2 number, since 2×28208354² = 1591422470778632, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28208354.

It is not an unprimeable number, because it can be changed into a prime (28208359) 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, 18482 + ... + 19949.

It is an arithmetic number, because the mean of its divisors is an integer number (5303616).

Almost surely, 2^28208354 is an apocalyptic number.

28208354 is a deficient number, since it is larger than the sum of its proper divisors (14220574).

28208354 is a wasteful number, since it uses less digits than its factorization.

28208354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38800.

The product of its (nonzero) digits is 15360, while the sum is 32.

The square root of 28208354 is about 5311.1537353008. The cubic root of 28208354 is about 304.4102336140.

The spelling of 28208354 in words is "twenty-eight million, two hundred eight thousand, three hundred fifty-four".