28219674 has 32 divisors (see below), whose sum is σ = 67898880. Its totient is φ = 7638192.

The previous prime is 28219673. The next prime is 28219687. The reversal of 28219674 is 47691282.

28219674 = T₂₈₃₆ + T₂₈₃₇ + ... + T₂₈₄₂.

It is not an unprimeable number, because it can be changed into a prime (28219673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16884 + ... + 18479.

It is an arithmetic number, because the mean of its divisors is an integer number (2121840).

Almost surely, 2^28219674 is an apocalyptic number.

28219674 is an abundant number, since it is smaller than the sum of its proper divisors (39679206).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28219674 is a wasteful number, since it uses less digits than its factorization.

28219674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35394.

The product of its digits is 48384, while the sum is 39.

The square root of 28219674 is about 5312.2193102318. The cubic root of 28219674 is about 304.4509480657.

The spelling of 28219674 in words is "twenty-eight million, two hundred nineteen thousand, six hundred seventy-four".