28213346 has 16 divisors (see below), whose sum is σ = 50034240. Its totient is φ = 11674320.

The previous prime is 28213343. The next prime is 28213373. The reversal of 28213346 is 64331282.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (28213343) 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, 34340 + ... + 35151.

It is an arithmetic number, because the mean of its divisors is an integer number (3127140).

Almost surely, 2^28213346 is an apocalyptic number.

28213346 is a deficient number, since it is larger than the sum of its proper divisors (21820894).

28213346 is a wasteful number, since it uses less digits than its factorization.

28213346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69529.

The product of its digits is 6912, while the sum is 29.

The square root of 28213346 is about 5311.6236688982. The cubic root of 28213346 is about 304.4281895979.

The spelling of 28213346 in words is "twenty-eight million, two hundred thirteen thousand, three hundred forty-six".